#2048bit

[ld789one]

Trang tổng ld789 – Thăng hoa chiến thắng cùng lô đề online

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[scarlettjohanssonnf]

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[susiarei]

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[dailytechnologynews]

The Curious Case of Navi 12 | Is this big Navi?

There are 3 Navi chips this year and or early next year. They are Navi 10, Navi 12, and Navi 14. Navi 10 is already released, and Navi 14 has multiple rumors which corroborate and gives us a pretty clear idea of what it is.

• Navi 10 - 256bit GDDR6, 40 CUs, 2560 SPs, 16 SDPs

• Navi 14 128bit GDDR6, 24 CUs, 1536 SPs, 8 SDPs

Before we discuss Navi 12, let's take a step back and understand the RDNA architecture and how AMD is getting to 24 CU’s. There is the concept of the shader engine. AMD is cutting the die in half. Shader engine, memory bus, and SDPs. That would take them to the same specs as Navi 14, but with 20CUs. They then add two dual compute units. This takes them up to 24CUs. You may be asking why they would want to mess with the CUs vs memory BW ratio, but I think this is a very smart decision. Navi 14 is the ultimate mobile GPU for AMD. Apple is using it for sure, and they are hoping to get it into many more Windows laptops too. This means it must be highly efficient. As shown by 5700XT, AMD could have pulled clocks back slightly and gotten huge efficiency gains. To this end, AMD is cutting clocks, increasing efficiency, but to keep the memory BW to performance ratio balanced, they are adding 4 more CUs in the form of 2 Dual Compute Units.

Now that we understand their relationship between Navi 10 and 14, there is the question of what is Navi 14. There is some information that is known. That is in regards to the Scalable Data Ports. These essentially sit between the memory controller, media hubs, display controllers, (optional CPU in the case of APUs), and the actual GPU. Let’s look at various AMD GPUs and their SDP count.

• Navi 10 – 256bit GDDR6 – 16 SDPs

• Navi 14 – 128bit GDDR6 – 8 SDPs

• Vega 10 – 2048bit (2 stacks of HBM) – 16 SDPs

• Vega 12 (Apple) – 1024bit (1 stack HBM) – 8 SDPs

• Vega 20 – 4096bit (4 stacks of HBM) – 32 SDPs

With this we have a very clear relationship of memory bus/width to memory configuration. Navi 12 is a curious case for this reason.

• Navi 12 – ????? – 16 SDPs

With this in mind, it seems that it can only be 256bit GDDR6 or 2 stacks of HBM right? Well, not quite. SDPs are also overbuilt in a sense. The port width is probably different depending on the GPU, Raven Ridge uses per SDP 256-bit (32 bytes) or 512-bit bidirectional, at 1.6Ghz comes there corresponding to 102.4GB/s or 204.8 GB/s Anyway with 16 SDPs with 256bit (32 Bytes) SDPs at 1.75Ghz (14Gbps GDDR6) one could theoretically have 896GB/s or if only half as wide, exactly 448GB/s, the GDDR6 bandwidth of Navi 10. This leaves the option for a 512bit bus open as well, which AMD has not done since Hawaii. So now we have 3 different options for Navi 12.

• 256bit GDDR6

• 512bit GDDR6

• 2048bit HBM2

Well known leaker TUM_APISAK has posted a leak which shows that Navi 14 is M (Mainstream or Mobile?) while both Navi 10 and 12 are P (Performance or Premium?) It is safe to say with 16 SDPs and the P designation that Navi 12 sits above Navi 14. The real question is whether it sits below or above Navi 10. I think we can deduce this quite easily. For it to be between Navi 10 and 14, there is a very narrow gap.

• Cut Navi 10 – 36CUs

• Full Navi 14 – 24CUs

To sit between, that means ~32 CUs for a full version and 28 CUs for a cut version. I don’t think this makes much sense with tape out costs and product positioning. They would also have gone with something like 12 SDPs and a 192bit GDDR6 bus. That would be a good 1660ti/2060 competitor, but clearly that’s not what they did by sticking with 16 SDPs. Also, looking at the RDNA block diagram, I cannot see how they would even get to this CU count. Perhaps they can, and are using less expensive GDDR5 memory? With this in mind, I think we can safely rule out it being below Navi 10.

If that is the case, we are down to 2 options, 512bit bus, and 2 stacks of HBM. I think the prior is a dead end, and consumes way too much power and die space. I think we can rule this out as well. This leaves only one viable option in my mind. A 2 stacks of HBM2(E) Navi 12. Given that memory prices have fallen rapidly, HBM is quite a high volume memory standard, HBM2(E) is increasing in speed, and the prices AMD sold Vega 56 for, I think it is plausible.

This fits the rumored launch timing very well too, with Navi 14 sometime this month or next month at the latest in the upcoming Macbook Pro 16”. There is supposedly another Navi launching early next year. Navi 12 fits the bill. For the last bit, let’s think about how RDNA can scale and take a guess at the CU count. There are 3 options which I think fit the best.

• 3 Shader Engines, 10 Dual Compute Units each, giving a total of 60CUs.

• 3 Shader Engines, 12 Dual Compute Units each, giving a total of 72CUs.

• 4 Shader Engines. 8 Dual Compute Units each, giving a total of 64CUs.

Of these I think the last would make the most sense. In terms of layout, it makes much more sense given the constraints of dies having to be rectangular. I know 64 CUs isn't a limitation for AMD, but it keeps cropping up! It also fits a pattern of the other Navi GPUs with the relationship of CU’s per SE.

• Navi 14 – 1 SE, 12 Dual CUs per SE = 24CUs = 1536 SPs

• Navi 10 – 2 SE, 10 Dual CUs per SE = 40CUs = 2560 SPs

• Navi 12 – 4 SE, 8 Dual CUs per SE = 64 CUs = 4096 SPs

Thank you for taking the time to read this. I look forward to any feedback you may have on this. I took a lot from Komachi Ensaka and various users on 3D Center such as BoMby and Locuza.

[gslin]

這次 OpenSSL 的兩個 CVE

這次 OpenSSL 的兩個 CVE

難得在 Hacker News 首頁上看到 OpenSSL 的 CVE：「OpenSSL Security Advisory [5 July 2022]」，相關的討論在「OpenSSL Security Advisory (openssl.org)」。 第一個 CVE 是 RCE 等級，但觸發條件有點多： 首先是 RSA 2048bits，這個條件應該算容易發生的。 第二個是，因為這個安全問題是因為 OpenSSL 3.0.4 才引入的程式碼，而 OpenSSL 3.0.4 是 2022/06/21 發表的，未必有很多人有升級。 第三個是，因為這次出包的段落是用到了 AVX-512 指令集，一定要 Intel 或是 Centaur 的 CPU，後面這家公司前身就是威盛 (VIA) 的一員，去年賣給了 Intel (然後發現連官網用的 domain 都沒續約…)。 而 AMD 雖然在…

[loadingod697]

Fargo Dtc4000 Driver Download

Download: Fargo DTC4000 Driver, Firmware & User Manual Download the latest Fargo DTC4000 driver, firmware, user manual, and workbench to optimize your card printer performance and the quality of your printed cards. You can always turn to ID Wholesaler for help! Have been trying to install our card printer, Fargo Persona C30e on there. The C30e only has drivers available for upto Windows 7. But I am able to successfully install the driver. But the printer only shows up in 'Connected Devices' but not in 'Printers and Scanners'. All new Driver and Firmware versions for all new and old Printers by HID Global, Zebra, Evolis, Nisca, Datacard and YouCard - for Windows, Linux and Mac. Drivers and Firmware Here can you find all driver and firmware updates for your HID FARGO, SwiftColor, Zebra, Nisca, Evolis or Datacard card printer. Updating Firmware on a DTC4000. Keeping your ID card printer’s firmware up to date can help you prevent problems with printing. Please Note: The Fargo DTC4000 has been discontinued by the manufacturer.

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Hid Omnikey 3021 Driver Windows 10

Version1.0Download383Stock25Total Files20Size138.61 KBCreate DateJanuary 21, 2015Last UpdatedFebruary 18, 2015

Welcome to the downloads for Fargo Card Printers page. In order to update the firmware, you will need to download and install the Fargo Workbench.

All document files are .pdf files and are best viewed in Adobe® Reader. Click on Adobe Reader logo to download reader.

I you have problems selecting the proper download or need help with your Fargo Plastic card printer, please contact Total ID Solutions support team.

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[z5163295]

Midsem Review

The Midsem exam was a lot harder than I thought it would be, when compared to the past papers that were posted.

There were a few topics that I wasn’t sure about in the exam, so I’ll need to revise these better:

Proof of liveness

SHA256 (and how long it would take to crack the hash)

Tumbler Locks

RSA (512, 2048bit etc.)

NIST

The good news is that all the time spent on the SecSoc NSA Cryptogram website paid off! I was able to crack the cipher in a few minutes, giving me more time to look at the first part.

[ryanssecurityengineering]

Week 3 RSA

I was playing around with the web application that lets you generate RSA keys, and it became clear on how you can crack RSA. Before we do that, let’s see how RSA works.

Step 1

Choose values for p and q. The values must be prime numbers. Say I choose 5 and 11. Soon it will become evident as to why these are very weak prime numbers.

Step 2

Generate n = p * q. N is publicly known. In this case, n = 5 * 11 which is 55.

Step 3

Calculating phi(n) = (p-1) * (q-1), in this case it is (5-1) * (11-1) which is 40.

Step 4

Generate your public key - pick a prime number between [3, 40). Let’s pick 3!

My Public Key is (e=3, n=55)

Step 5

Generate your private key.

Need to find a value where e*d mod phi = 1. So in this case, 3d mod 40 = 1.

My Private Key is (d=27, n=55)

ENCRYPTION AND DECRYPTION

Say we wanted to encrypt and decrypt now. It is pretty easy. The online app tells me these are the steps to encrypt the letter ‘A’.

CRACKING RSA

The main way you can crack RSA is somehow you can factorise n. If you can factorise n, then you can get p and q to get phi(n), then getting the private key just becomes a simple case of the Euclidean Algorithm.

For example, if n=55, then I can crack this very easily - I can try all the primes less than 55. Eventually I reach 11 and I see it divides, and the result is 5, which is also prime! Done! p = 11, and q = 5, and the RSA is now broken. 

This is why anytime you see a prime number in cryptography it is really big, because the larger the number is, the more bits of work an attacker needs to do to factorise it. At this time, RSA 2048 bit modulus is the most secure - think about it - 2048 bit modulus is quite insane! Apparently people have been able to factorise RSA 512 bit modulus.

However RSA 2048bit modulus doesn’t mean 2048 bits of work - brute forcing all the possible modulus would be impossible. Faster techniques than brute forcing are employed to attempt to factorise a number. However even these faster techniques make factorising a 2048bit number quite difficult. NIST says using a 2048 bit modulus should be OK until 2030.

Above is a table of Wikipedia showing how easy it is to factorise numbers up to 260 bits. 

General number field sieve algorithm

It is known that the best algorithm to factorise numbers has this time complexity... bit less than brute force! I wonder how they calculated it.

[masaa-ma]

誰でも簡単に自分のメールを自分で管理しセキュアに運営できるメールサーバーが作れる「Helm」

from https://gigazine.net/news/20181018-helm/

誰でも簡単に自分のメールを自分で管理しセキュアに運営できるメールサーバーが作れる「Helm」

インターネット上に限らずさまざまな場面で「メールアドレス」が個人を特定する情報として利用されるようになってきていますが、利用場面が増えるとともに、メールアドレスの乗っ取りなどで発生する被害は大きくなっています。アカウントを保護しメールの内容をクラウドサービス経由で盗み見されるリスクも減らすため「自前でセキュアなメールサーバーを確保したい」という需要に応えるべく、誰でも簡単にたった5分で設定できるメールサーバー「Helm」が登場しています。 Helm https://thehelm.com/ インターネットプロバイダーなどから提供されるメールサービスだけでなく、Gmailなどのクラウドベースのフリーのメールサービスが普及していますが、「メールに関するデータは自分以外の第三者が管理している」という状況から発生するリスクは、ユーザー自身で避けられないという構造になっています。多機能なGmailを無料で使えるという利便性と引き換えに、メールの中身を誰かに見られたり、メールアカウント自体を乗っ取られたりするというリスクが常につきまとっているというわけです。 そんなリスクを嫌って自前でメールサーバーを持つという方法を選ぶユーザーもいますが、メールサーバーの設定や管理には知識と技術が求められ、初心者には手が出せない状況でした。そこで誕生したのが誰でも簡単に自分のメールを自分で管理しセキュアに運営できるメールサーバー「Helm」です。

Helmは全自動でHelm ゲートウェイサービスとの接続を確立し、静的IPアドレスを提供可能なメールサーバーです。とてつもなくシンプルに説明すると、「簡単に作れる、メールサービスに用いるクラウドサーバー」。Helmがあれば、これまでGmailのGoogleやYahooメールのYahoo！などのサービス提供者によって提供されていたクラウドを、自前で保有・管理できるようになります。

自前で管理できるメールサーバー自体は古くからあるアイデアですが、Helmの特筆すべきところは設定の簡単さ。必要な��業はメールのドメインを指定して、Helmアプリを使ってパスワードとリカバリーキーを設定するだけ。標準的なプロトコルをサポートしており、OutlookやMozilla Thunderbird、各種メールアプリからのメールクライアント情報やメールデータの移行もHelmがすべて自動でやってくれます。GmailやYahooメールなどのクラウドメールについては、カスタムドメインを選択して新しいメールアドレスを作成できます。なお、HelmはSSL/TLS経由でメールを送受信するので、サービス提供者のHelmでさえメール情報へのアクセスは不可能です。

また、CalDAV、iCal、CardDAVをサポートしているので、カレンダーや連絡先の同期も可能です。

HelmはAES-XTR-256bitやRSA-2048bit/AES-256bitをサポートし端末内のデータはすべて暗号化されるため、第三者による無断の解読作業は困難です。

以下の記事ではMashableがHelmを実際に試しています。 Helm is the personal email server you never knew you needed https://mashable.com/article/helm-personal-email-server/

Mashableによると、既存のドメインがある場合の登録作業に必要な時間は約5分だったのことで、スマートフォンアプリを使った設定作業はHelmのアピール通り簡単なようです。 また、Helmは専用の物理キーによって秘密鍵を保管する仕組みのため、物理キーさえ安全に管理しておけばメールサーバーをセキュアに保てます。

さらに物理キーを紛失するリスクに備えて、Helmアプリを使って秘密鍵をスマートフォンに保存しておくことも可能です。

Helmには標準で128GBのNVMe対応SSDが内蔵されています。一般的なメールサービスで利用できる容量は15GBなので、約120GBが利用できるHelmの場合、個人利用であればデータ容量にはかなり余裕がありそう。さらに、最大5TBのHDDを増量可能なので、大量のメールを処理する一般企業ユースにも対応します。なお、RAIDに対応しているかどうかについては記載がありません。

山形の独特の形状のHelm。ARM Cortex-A72のクアッドコアSoC、2GBのECCメモリ、128GBのNVMe接続SSD、2つのUSB3.0ポート、ギガビットLANポートを備え、Wi-Fi4＆5(802.11 ac/a/b/g/n)とBluetooth4.2にも対応。消費電力はONモード時が10Wでスタンバイ時は0.4W。停電時には安全にシャットダウンする機能もあるとのこと。

サイズは4.375インチ×7.125インチ×5.125インチ(約11cm×18cm×13cm)と小型なので、スペースをとりません。

さらに、山形の筐体は、USB3.0接続でスタックすることも可能で、IoT製品のハブなどを想定した拡張性も確保されています。

Helmはハードウェアの価格が449ドル(約5万円)で、年間の利用料が99ドル(約1万1000円、初年度は無料)。自分でメールサービスを管理するというHelmの場合、サーバーが物理的な損傷を受けたり喪失した場合、メールデータを失ってしまうというリスクがあります。これに対応するため、Helmではメールデータをクラウドでバックアップするサービスがあり、万一の場合、ユーザーがデータを復旧できる仕組みが採用されています。ちなみにSSL/TLS経由で送受信されなかったデータは、プライバシー保護の観点からHelm(サーバーではなくサービス)側で保存しない運用になっています。また、Helmでは定期的にセキュリティアップデートやバグフィックスが提供される予定で、これらのサポート費用として年間利用料が必要となっています。 Helmと同じような機能を持つNASもあります。個人・小規模な法人に人気のSynology NASの場合、「MailPlus」機能によって5ライセンスが無料となっています。 SynologyのDSMでNASをグループウェア化してカレンダー・チャット・メモ・メール・スプレッドシートなどを使う方法まとめ - GIGAZINE

無料で使えるMailPlusですが、さらに5ライセンスを追加するには3万円以上が必要です。 Amazon | Synology MailPlus 5ライセンスパック MailPlus5License | | ネットワークストレージ 通販

このため、仮に管理したいメールクライアントが5つ以上あるような場合、Helmの利用料は相対的に見てかなり有利な価格設定だとみることができそうです。 誰でも簡単に5分で設定できるメールサーバー「Helm」は2018年11月出荷予定。ただし、記事作成時点では出荷エリアはアメリカ国内に限られています。 Shop – Helm https://thehelm.com/pages/shop

https://i.gzn.jp/img/2018/10/18/dandelion-seed/00.jpg

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AMD: nuova Radeon Pro V340 Multi-GPU in parallelo

Nuovo Articolo https://www.nerdpool.it/2018/06/16/amd-nuova-radeon-pro-v340-multi-gpu-in-parallelo/

AMD: nuova Radeon Pro V340 Multi-GPU in parallelo

AMD svela la sua nuova GPU Radeon Pro V340 durante la sua presentazione al Computex 2018 tenuta da Nick Phander (Director of Market Developement di AMD).

Questa scheda utilizza la tecnologia Multi-GPU, ovvero possiede due GPU Vega 10 unite nella stessa scheda che lavorano in parallelo. Ciascuna possiede 16GB di HBM2 formando 32GB finali. La Radeon permette anche l’utilizzo in parallelo da 16 utenti differenti suddividendo in parti uguali la propria memoria. Possiede 4096 unità di ombreggiatura, 256 unità di texture mapping e 64 ROP per singola GPU. E’ stato anche annunciato il supporto dedicato alla suite Adobe CC, migliorando così il supporto Adobe sui vari dispositivi che montano AMD. Secondo una demo dimostrativa le prestazioni sono maggiori del 35% messa a confronto con i vecchi modelli.

Scheda Tecnica:

-Processore grafico: Vega 10 -Core: 2x 4096 -Tmus: 2x 256 -Rops: 2x 64 -Dimensioni memoria: 2x 16’384MB -Tipo memoria: HBM2 -Ampiezza Bus: 2x 2048bit

Anche se AMD deve ancora annunciare ufficialmente questo multi-user 7 nm GPU, in rete è possibile trovare i risultati dei benchmark. Questo fa presagire la vicinanza ad un data di uscita.

Questa scheda video non è ancora in vendita, ma AMD ha fatto sicuramente la prima mossa nella battaglia delle schede video next-gen contro Nvidia.

Ulteriori informazioni sul sito AMD.

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Super Vpn Services

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The Unadvertised Details Regarding Best Vpn Most People Aren't Aware Of

New Post has been published on https://flowersontheporch.com/the-unadvertised-details-regarding-best-vpn-most-people-arent-aware-of/

The Unadvertised Details Regarding Best Vpn Most People Aren't Aware Of

Details of Best Vpn

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The best means involving checking would be in order to try out their own expert providers. It is usually tough to sift through them just about all for getting what the services you’re in search of. A VPN service is one sure method of hiding your IP, a vital bit regarding your special data. A lot more than three hundred VPN services are available in the promote over the total globe. Numerous VPN solutions are available, nonetheless you need to pick a service that delivers flexibility together with doesn’t be dependent on third parties. An exceptional VPN services may give you the comfort your private details are safe through hackers or eavesdroppers who may have the potential to decrypt confidential files, for instance your own address plus account variety. Okay, you’ve resolved for you to recruit often the best VPN service you could afford.

What You Don’t Know About Best Vpn

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Choosing Good Best Vpn

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To make sure personal privacy, it is advisable to make certain the fact that one has the particular VPN, which usually will not retail store magazines on-line. Consider as well the number of web servers that are employed as a way to offer VPN to be able to users connected with Linux working systems. You will find that how rapidly a VPN for Linux actually is usually is going to be it all depends on the process it gives you. VPN is short for Exclusive Private Multilevel, which is a network technologies which makes the safe multilevel connection on the public community like the particular web. If you’re looking for the extremely best VPN for house usage, after that be sure often the charges are usually within your current financial plan.

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امنیت تلگرام

امنیت تلگرام به عوامل متعددی وابسته است که در این مقاله به موارد مربوط به خود تلگرام بحث می شود. تلگرام Telegram نرم افزاری مبتنی بر شبکه های اجتماعی است که به دلیل امنیت و امکانات بالای خود، توجه کاربران زیادی را به خود جلب کرده است. به عنوان مثال در ماه فوریه 2015 برنامه واتس آپ به مدت چهار ساعت خارج از دسترس بوده و در همان زمان برنامه telegram بیش از 5 میلیون ثبت نام جدید داشته است.

اپلیکیشن تلگرام چت را به دو روش متفاوت ارائه کرده است. روش استاندارد : که با کلیک روی هر کاربر صفحه چت را باز کرده و می توانید پیام خود را ارسال کنید.

روش secret chat : امتیازی که استفاده از این روش چت دارد این است که امکان چت کردن به صورت Multi-Platform را محیا کرده است که برای داشتن یک گفتگوی کد شده یا رمزگذاری شده باید از گزینه secret chat استفاده کنید. امنیت تلگرام در پیامهای کد شده یا رمزگذاری شده یه صورت نامتقارن با سیستم های کد کننده ASA 256bit و RSA 2048bit تضمین شده است و بهترین قسمت موضوع این است که کاربر برای استفاده از این ابزار امنیتی نیاز به اقدام خاصی ندارد. مدیران تلگرام به قدری از امنیت خود مطمئن هستند که جایزه هایی برای کسانی که بتوانند این برنامه را هک کنند در نظر گرفته اند. نکته دیگری که قابل توجه می باشد سرعت بالای آن است که علی رغم این که پیام ها به صورت کد شده یا رمزگذاری شده هستند ولی سرعت بالایی دارند و این به دلیل استفاده از پروتکل MTProto می باشد و دلیل دیگر آن استفاده از سرورهای مختلف در سراسر جهان بصورت هاست ابری می باشد آنرا پایدار می سازد.

افزایش امنیت تلگرام

افزایش امنیت تلگرام با روش های متعددی قابل انجام است. ممکن است بپرسید امنیت تلگرام چقدر است و یا چگونه از هک شدن تلگرام جلوگیری کنیم

ما در این مقاله جلوگیری از هک تلگرام با افزایش امنیت اکانت تلگرام را به شما خواهیم آموخت. پیشنهاد می کنیم برای تامین پیشنیازهای امنیت مقاله جلوگیری از هک وای فای را نیز مطالعه کنید.

روش اول : رمز گذاری روی برنامه تلگرام 1- وارد برنامه تلگرام شوید. 2- به قسمت تنظیمات (settings ) وارد شوید. 3- گزینه privacy and security را انتخاب کنید. 4- گزینه passcode lock را انتخاب کنید. 5- در این مرحله رمز مورد نظر خود را وارد کنید. 6- عملیات رمزگذاری در این مرحله به پایان رسیده است و در قسمت بالا آیکون قفل باز ظاهر شده است.

اما این امکان وجود دارد که هنگام خروج فراموش کنید روی قفل کلیک کنید که اگر بخواهید به صورت اتوماتیک این کار انجام شود در قسمتpassword lock  گزینهAuto lock  را انتخاب و مقدار آن را به زمان دلخواه خود تغییر دهید تا در زمان تنظیم شده به طور اتوماتیک تلگرام قفل شود. تا اینجا برای امنیت تلگرام خود تنها یک قدم برداشته اید.

روش دوم : تایید دو مرحله ای یا two–step verification 1- وارد برنامه تلگرام شوید. 2- به قسمت تنظیمات (settings ) وارد شوید. 3- وارد قسمت privacy and security شوید. 4- گزینه two–step verification را انتخاب نمایید. 5- روی گزینه set additional password کلیک کنید. 6- در این قسمت Email و Password را با دقت وارد کنید چرا که این پسورد در آینده برای شما نیاز خواهد بود. پس از وارد کردن پسورد و ایمیل با پیغام زیر روبه رو می شوید که می بایست ایمیل خودتان را چک کنید.

7- ایمیل ارسالی دارای یک لینک می باشد که کلیک بر روی آن به من��له تایید است و شما باید این کار را انجام دهید تا عملیات انجام شده با موفقیت ثبت شود. پس از کلیک روی لینک تصویر زیر را مشاهده خواهید کرد.

حال اگر کسی قصد ورود به تلگرام با شماره شما را داشته باشد اگر کد ارسال شده توسط تلگرام را داشته باشد نیاز به پسوردی که در این مرحله تعین کرده اید دارد تا بتواند وارد اکانت شما شود.

روش سوم : کنترل و مشاهده دستگاه های وارد شده – active sessions در ابتدا توضیح مختصری درباره این روش می دهیم تا بیان مطلب بهتر صورت گیرد. اگر فردی با شماره شما وارد تلگرام شود و در صورتی که کد ارسالی تلگرام را هم به نوعی به دست بیاورد پیغامی از جانب تلگرام برای شما ارسال می شود که سیستمی با این مشخصات وارد اکانت شما شده است که برای جلوگیری و قطع ارتباط آن می توانید از روش زیر استفاده کنید. 1- وارد برنامه تلگرام شوید. 2- به قسمت تنظیمات (settings ) وارد شوید. 3- وارد قسمت privacy and security شوید. 4- به قسمت active sessions وارد شوید. در تصویر زیر مشاهده می کنید که دستگاه دیگری نیز از این اکانت استفاده می کند که این موضوع در صورتی که توسط شما انجام نشده باشد امنیت تلگرام شما را به خطر می اندازد چون تمام اطلاعات ارسالی و دریافتی دیگر ما از طریق شخص دیگری در حال رصد شدن می باشد که امکان سواستفاده از آن میسر می شود.

5- اگر بخواهید کاربری که از اکانت شما استفاده می کند را از اکانت خارج کنید دستکاه مورد نظر را انتخاب و گزینه ok را بزنید. 6- اگر بخواهید همه کاربران اضافی را از اکانت خارج کنید گزینه Terminate All Other Sessions را انتخاب و ok کنید. اپلیکیشن تلگرام زمانی که کاربر دیگری قصد استفاده از اکانت شما را دارد به شما از طریق پیام اطلاع می دهد که در آن IP شخصی که وارد شده است مشخص می شود.

روش چهارم : عدم نمایش آنلاین بودن در تلگرام – Last Seen در برخی مواقع نیاز هست که کسی از آنلاین بودن شما با خبر نشود برای این که زمان آنلاین شدن قابل رویت دیگران نباشد طبق روش زیر عمل کنید. 1- وارد برنامه تلگرام شوید. 2- به قسمت تنظیمات (settings ) وارد شوید. 3- وارد قسمت privacy and security شوید. 4- گزینه Last Seen را انتخاب کنید. 5- در قسمت اول 3 گزینه وجود دارد که Everybody اشتراک عمومی بوده و همه می توانند آنلاین بودن شما را رویت کنند. 6- گزینه دوم My Contacts نفراتی که شماره آنها در دفترچه تلفن شما ذخیره شده است می توانند مشاهده کنند. 7- گزینه سوم Nobody بوده و هیچ کس نمی تواند زمان آنلاین بودن شما را مشاهده کند. در برخی منابع این روش برای مخفی کردن عکس پروفایل نیز گفته شده که این روش هیچ ربطی به تصویر پروفایل ندارد.

به طور کلی امنیت در تلفن همراه به چند نکته بستگی دارد که با رعایت آنها می توان زمینه سو استفاده از حریم خصوصی را کاهش داد. – تهیه اپلیکیشن یا نرم افزارهای کاربردی از منبع اصلی یا معتبر که شرکت طراح نرم افزار آن را تایید کرده است.( گاهی اپلیکیشن های دیگر در تلفن همراه نقش بدافزار را برای کاربران ایفا می کنند که برای جلوگیری از این امر تهیه اپلیکیشن از منبع اصلی پیشنهاد می شود.) – استفاده از اینترنت و شبکه امن ( از هر شبکه مخصوصا شبکه های رایگان و آزاد در اماکن عمومی برای اتصال به اینترنت استفاده نشود. امنیت شبکه های آزاد بسیار کم می باشد.) – از اپلیکیشن های مشابه استفاده نکنید. ( برای برنامه تلگرام اپلیکیشن های مشابهی وجود دارد که گاهی امکانات این اپلیکیشن ها از خود برنامه تلگرام بیشتر می باشد ولی چون شرکت طراح آن را تایید نکرده است شاید امنیت تلگرام را به خطر بیندازد.) – از قرار دادن تلفن همراه ، تبلت یا رایانه شخصی خود به دیگران خوداری کنید. – لینک هایی که با پسوند ( bot. ) می باشد اعتماد و لمس نکنید زیرا این لینک ها ربات بوده و احتمال بدافزار بودن آنها وجود دارد. – روی لینک های ارسالی از منابع نامعتبر کلیک نکرده و  آنها را منتشر نکنید. ( گاهی لینک ها دارای بدافزارهایی هستند که شما متوجه اجرای آنها نمی شوید و در ظاهر شاید کار مورد نظر شما انجام شود اما واقعیت چیز دیگری است.)

جلوگیری از هک تلگرام

جلوگیری از هک تلگرام

جلوگیری از هک تلگرام با چند اقدام ساده قابل انجام است. با روش های ذکر شده امکان  را خواهید داشت و قادر خواهید بود تا امنیت اکانت تلگرام خود را حفظ کنید.

دوستان عزیز لطفا با مشارکت در بحث ما را در تامین کیفیت مقاله امنیت تلگرام یاری نمایید.

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خدمات ال VPN على الحاسوب والهاتف لسنة 2017

أفضل خدمات ال VPN على الحاسوب والهاتف لسنة 2017

تعتبر خدمات ال VPN هي إختصاراً ل Virtual Private Network ومعناها شبكة وهمية يقوم المستخدم بإنشائها لارسال واستقبال البيانات بين حاسوبه وبين الانترنت بشكل أمن ومشفر من خلال استخدامه احد سيرفرات ال VPN ، لحماية خصوصيته ومنع التعقب ، من خلال استخدام IP ADDRESS فى دولة اخرى مختلف عن عنوانك الاصلى على الانترنت فى دولتك الاصلية، وبذلك لا يستطيع المخترقون الوصول اليك بسهولة و لا تستطيع شركة الاتصال المزودة لخدمة الانترنت لديك الاطلاع على نشاطاتك عبر الانترنت .

ومن مزايا خدمات ال VPN انه يمكنك أن تفتح المواقع المحظورة داخل نطاقك الجغرافي، لأن الـ IP الخاص بك تغير إلى دولة أخرى وتفتح لك جميع الخدمات الموجودة بهذه الدولة ، وايضا يوفر لك سرعة إنترنت أعلى وتكلفة أقل من تلك التي تحصل عليها مع انترنت دولتك وبالطبع هذا متاح اكثر فى خدمات ال VPN المدفوعة بمزايا اكثر بمراحل من المجانية ، واليوم سوف نتعرف على أفضل خدمات ال VPN فى بداية عام 2017 حتى الان مع مرور ايام قليلة من شهر يناير .

1. خدمة : PureVPN

خدمة رائعة مجانية بامكانات محدودة ومدفوعة ايضا مع مزايا اعلى متاحة لمستخدمى الويندوز والهواتف الذكية الاندرويد والايفون ، تمتاز بضمها لاكثر من 500 سيرفر مع 141 دولة مختلفة وأصل هذه الخدمة من هونج كونج مع مزايا التشفير الرائعة والتغطية العالمية .

2. خدمة : Ivacy

تأسست في عام 2007 ،وقد تم مؤخرا تجديدها ومع ميزات جديدة مثيرة للإعجاب، وهي واحدة من خدمات VPN الأكثر أمانا وتشفيراً ، تعتبر واحدة من أحدث مقدمي الخصوصية في العالم ، تستخدم فى عملها بروتوكولات PPTP, OpenVPN, SSTP and L2TP ، مع قوة تشفير AES-256 bit encryption .

3. خدمة : TorGuard

واحدة من أفضل خدمات ال VPN و تعمل في أكثر من 50 بلدا في جميع أنحاء العالم، وهي في توسع مستمر ، تستخدم طبقة عالية من الامان والتشفير AES256 with 2048bit RSA for better security من اجل تحسين الامن بها ، متاحة لانظمة التشغيل الويندوز، الماك، لينكس، Android و iOS

4. خدمة : IPVanish

خدمة رائعة ومميز تعمل على خلق بيئة آمنة اليوم لاستخدام شبكة الإنترنت ، قبل دخول أي مستخدم على الشبكة، لا بد من تأسيس اتصال IPVanish VPN، والتى سوف تعمل على تحويل البيانات على شبكة الإنترنت بأكملها إلى شبكة مشفرة بما في ذلك رسائل البريد الإلكتروني ونقل البيانات، والخدمات المصرفية عبر الإنترنت والرسائل الفورية وكل التصفح على الانترنت ، لا يمكن اعتراض البيانات المشفرة من قبل أي طرف ثالث بما في ذلك شركات ISP (موفر خدمة إنترنت).

5. خدمة : BTGuard

وتستند هذه الخدمة على خدمة البروكسي بحيث يكون المستخدم قادرا على إخفاء عنوان IP الحقيقي عن بقية العالم ، كما أن لديها برنامج قوى التشفير للمستخدمين الذين يحتاجون إلى أمن خاص لحماية بياناتهم وخصوصياتهم ، صممت خصيصاً لمحبى خدمات ال BitTorrrent التورنيت لحماية هويتهم .

اتمنى من أن يكون الموضوع راق لتطلعاتكم . و إليكم موضوع سابق يأمن  جهازك من الهاكرز ، و يحمي نفسك من التجسس ، ويحمي خصوصيتك على الانترنت .

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