Big thanks to my TG channel follower for bringing up this crucial subject, researchers have recently observed a marked rise in account hijackings, particularly with Telegram. It is important to mention that phishing and social engineering are often used in tandem in the majority of cases.

However, I want to talk about instances today where accounts are compromised due to messenger vulnerabilities rather than phishing attacks (which, thankfully, are usually quickly fixed):

1. CVE-2022–36934 (critical vulnerability in WhatsApp) — allowed to execute RCE via buffer overflow while performing a video call;

2. CVE-2022–27492 (vulnerability in WhatsApp) — allowed to execute RCE by sending a pre-created video file;

3. In 2017, there were many news pieces about the possibility of hijacking Telegram and WhatsApp account by sending (just) an image file. And you didn’t necessarily need to download it to your phone to get infected with a malware. However, I have not found any confirmation of this CVE so far.

What conclusions can be drawn here? Aside from 2FA, mail binding, and other features, the best thing to do in messengers is turn off file auto-downloading.

To disable auto-downloading on Telegram, go to “Privacy & Security → Data Settings”. This applies to both wifi and cellular connections. You never know what will be sent to you, and what 0-day was released just yesterday, so always remember that forewarned is forearmed, and take all necessary security precautions ahead of time before it is too late.

Crypto-OpSec-SelfGuard-RoadMap/README.md at main · OffcierCia/Crypto-OpSec-SelfGuard-RoadMap

Here we collect and discuss the best DeFi, Blockchain and crypto-related OpSec researches and data terminals - contributions are welcome. - Crypto-OpSec-SelfGuard-RoadMap/README.md at main · OffcierCia/Crypto-OpSec-SelfGuard-RoadMap

https://github.com

Naturally, you should always keep in mind that unless you learn to be a little more cautious about what and where you enter, send, and open, no antivirus software or two-factor authentication will be of any use!

In today’s interconnected digital landscape, the importance of securing our online accounts cannot be overstated. As individuals increasingly rely on instant messaging platforms for communication, the necessity to protect our privacy and personal information has become paramount. Particularly, when it comes to Telegram — an app renowned for its privacy features and encryption — it is essential to understand the criticality of securing our accounts in order to fortify our digital presence against potential threats from malicious actors.

Telegram’s extensive user base and emphasis on privacy have made it an appealing choice for individuals and organizations seeking a secure means of communication. However, while Telegram offers robust security features, it is imperative for users to take proactive measures to safeguard their accounts and protect their sensitive information.

In essence, the need to secure your Telegram account transcends individual benefit — it extends to fostering a more secure and privacy-conscious digital community. By prioritizing account security and implementing robust measures to fortify your presence on the platform, you not only safeguard your own privacy and information but also contribute to elevating the overall security posture of the Telegram network.

Speaking seriously, human freedom is predicated on privacy; without it, decisions can be easily swayed by everything from criminal prosecutions to public censure to coercive measures. I feel that there should be no exceptions to the rule that privacy must be protected. Your data belongs to you and only to you, not to any third parties like corporations, hackers, or special services.

With all said, it is imperative to differentiate between anonymity and privacy. Privacy means that people can clearly tell who you are, but they don’t know what you would do. Being anonymous suggests that, despite what you do being known, people are unaware of your identity.

For most people, anonymity is desirable but not necessary. You need anonymity if you’re concerned about anyone seeing your data. But… how “much” security? Well, depending on your threat model, which includes your actions, the identity of your possible attacker, and other factors. Online security, privacy, and anonymity are much safer when combined with personal security. While privacy is essential, not everyone requires personal security or anonymity.

Unfolding Ancient Wisdom: How Ancient Stories Teach Modern Humans about Security and OpSec

Unfolding Ancient Wisdom: How Ancient Stories Teach Modern Humans about Security and OpSec In today's digital age, concerns surrounding security and OpSec (Operational Security) are paramount. As ...

https://medium.com

As law enforcement and “big tech” corporations are the first to be interested in your data, protect yourself rather than depending on others. Avoid asking yourself if you have anything to conceal. Do you have anything that you would like to keep safe? Numerous instances of “harmless surveillance” that are defended have serious repercussions.

Think twice about this. Securing our digital presence is becoming more and more important as technology develops, which emphasizes the need for a strong commitment to account security across all digital platforms!

The lightweight chat client Telegram is one of the most common methods of communication in crypto, and there’s a good reason for that. This app is also frequently used for work and communication, so it stands to reason that scammers and hackers would also look for victims there.

This article initially written for immunefi.com (my ex-job) by myself.

Let’s figure out how not to be a victim! Let’s get started!

Beware of impersonators (carefully check out Telegram bio as the scammer may insert any nickname to his bio and leave his own nickname blank), fake notifications about logging into Telegram (check out them carefully, they should come into the official telegram news & tips channel) with a phishing link, fake bots (yep, bots — not user accounts — may DM first) and so on!

NONE of the telegram chats are E2E encrypted not 1:1, not groups — only TLS. Only the secret chat one iirc.

• Phone Number → Who can see my phone number — Nobody;

• Data and Storage → Auto Download Media → Toggle off;

• Phone Number → Who can find me by my number — My Contacts;

• Last Seen & Online → Who can see my timestamp — Nobody;

• Profile photo → Who can see my profile photo — My Contacts;

• Calls → Who can call me — My Contacts (or Nobody, if you prefer);

• Calls→ Peer-to-peer — My contacts (or Nobody, if you prefer not to share your IP address with chat partners);

• When you start the call, you will see four emojis at the top right corner — ask the person you are calling to name them and compare them to yours (they should be the same as yours). This is protection from MitM;

• Forwarded Messages → Who can add a link to my account when forwarding my messages — My Contacts;

• Never add contacts to Telegram (if there are any — erase them), and always use VPN;

• Groups & Channels → Who can add me — My Contacts;

• Set up a 2FA (cloud password);

• Set up a cloud email 2FA!;

The need to keep our online accounts safe is constant as we make our way through the complexity of the digital world. Making a deliberate effort to strengthen your Telegram account is a proactive measure to preserve the integrity of secure communication, protect personal data, and protect your privacy.

If you want to support my work, please, consider donating me:

• 0xB25C5E8fA1E53eEb9bE3421C59F6A66B786ED77A or officercia.eth — ETH

• 17Ydx9m7vrhnx4XjZPuGPMqrhw3sDviNTU — BTC

• 4AhpUrDtfVSWZMJcRMJkZoPwDSdVG6puYBE3ajQABQo6T533cVvx5vJRc5fX7sktJe67mXu1CcDmr7orn1CrGrqsT3ptfds — Monero XMR

• More addresses: github.com/OffcierCia/support.

To sum up, protecting your Telegram account is essential and involves a larger commitment to security, privacy, and good digital citizenship. We actively contribute to the development of a more secure and safe virtual environment that upholds integrity, privacy, and trust by strengthening our accounts.