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Sooraj Sathyanarayanan Profile picture
@iAnonymous3000
Sep 30, 2022 • 11 tweets • 9 min read • Read on X
Number of active users doesn't indicate how secure/private the messenger is.

❌Fb messenger
❌WhatsApp
❌WeChat
❌Snapchat
❌Wickr
❌Viber

Great alternatives: @signalapp, @session_app, @element_hq, @minds chat, @ThreemaApp Image
Also, always question - what kind of metadata does this app collect?

In a public debate with Just Security‘s David Cole at Johns Hopkins University, former Director of the NSA and CIA, General Michael Hayden made the provocative remark, “We Kill People Based on Metadata.”
Great resource - Comprehensive comparison of various messengers -

securemessagingapps.com
Signal calls are arguably the best (compared to normal call which can be recorded/tracked) as its end to end encrypted and the quality is great. #e2ee

You can also share ur screen using @signalapp desktop.

Used by @Snowden, @jack, @schneierblog Image
Never use SMS.

Most Apple users use iMessage which is much better than WhatsApp for sure but there are better options.

Use these instead:
@session_app
@signalapp

iMessage vs Signal

Credit: @sunknudsen

For those, who are not comfortable giving your phone number to Signal can go with either @ThreemaApp or @session_app. Or you can mask your phone number using @MySudoApp and then use that number to register with Signal.

Great video by @naomibrockwell -

odysee.com/@NaomiBrockwel…
Here are 5 Reasons to Stop Using WhatsApp by @avoidthehack

avoidthehack.com/stop-using-wha… #dataprivacy #deletewhatsapp
FBI document shows what data can be obtained from encrypted messaging apps

therecord.media/fbi-document-s…
Here’s an amazing thread by @moxie on @telegram
Check out this document I uploaded on @skiffprivacy using #IPFS protocol. Messenger Comparison - @signalapp vs. Telegram vs. WhatsApp. Not sure who originally made it; credit to them.

app.skiff.com/docs/7496c73f-…
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More from @iAnonymous3000

Sooraj Sathyanarayanan Profile picture
Dec 12
Privacy in #Monero (with FCMP) vs. #Zcash Shielded

When focusing solely on cryptographic theory, two major privacy engineering marvels emerge: Zcash $ZEC, using advanced zero-knowledge proofs & Monero $XMR, moving towards Full-Chain Membership Proofs (FCMPs).

🧵

Disclaimer: I’m a security & privacy researcher, not an official representative of these projects. The following is a theoretical exploration based on public knowledge and cryptographic assumptions. I could be wrong on some details.Image
@zcash uses high-level zero-knowledge proofs—originally zk-SNARKs, now the Halo2 architecture—to obscure sender, receiver, and amounts in shielded transactions.

The theoretical end-goal: make every note indistinguishable, enabling a truly private ledger.
Halo2 uses polynomial commitments (like KZG) and inner-product arguments for succinct, recursive proofs. With O(log n) scaling in verification, it manages large ledgers efficiently, without the need for a post-hoc trusted setup. This sets a robust foundation for theoretical privacy at scale.
Read 11 tweets
Sooraj Sathyanarayanan Profile picture
Jan 20, 2023
iOS vs. GrapheneOS

In terms of #privacy and #security, GrapheneOS absolutely crushes iOS on so many levels. A few awesome features are listed here.

🧵
@GrapheneOS is an #opensource operating system based on AOSP, focused on #security and #privacy. It is designed to be used on mobile devices, and includes features such as verified boot, sandboxing, and exploit mitigations.
It also includes the ability to use different encryption methods, and the ability to use VPNs and the Tor network to enhance #privacy.

GrapheneOS is geared more towards security-conscious and privacy-conscious users and has a #opensource ecosystem.
Read 11 tweets
Sooraj Sathyanarayanan Profile picture
Dec 31, 2022
Be safer online in 2023 by following these basic tips.

#CyberSecurityAwareness #cybersecurity #privacy

🧵
Check if your emails, phone numbers, passwords, etc. have been breached on @haveibeenpwned / Firefox Monitor.

More info -

Use secure passwords that are unique for every account you have. Do not include PII in your passwords, such as your name or birthdate.

I suggest using a passphrase with at least five words or a complex password with at least 25 characters. A password manager can come in handy.
Read 12 tweets
Sooraj Sathyanarayanan Profile picture
Dec 6, 2022
Why is data so important? Well explained by @harari_yuval

More data, more power.

Where is our data going? Who’s handling our data? Do they have our consent to use it in a particular way?
Value of data is increasing as we speak.

dataethics.eu/wef18-tech-dat…
Read 4 tweets
Sooraj Sathyanarayanan Profile picture
Nov 21, 2022
Twitter vs. Mastodon - how do they work?
Credit: @alexxubyte Alex Xu ,@bytebytego

Centralized vs. #Decentralized Social Network

#TwitterTakeover #TwitterMigration #mastodon

🧵 Twitter vs Mastodon
Trump's brand-new social network 'Truth Social' used Mastodon's code. @joinmastodon

Reference: blog.joinmastodon.org/2021/10/trumps…
Mastodon's revenue is not dependent on advertisers like other social media companies like Facebook, Instagram, Twitter, Snapchat, Tiktok, etc. The ad-based revenue model isn't necessarily good in all cases as ads=tracking leads to the users -> product and advertisers -> customers Credit: Four Week MBA
Read 23 tweets
Sooraj Sathyanarayanan Profile picture
Nov 18, 2022
My humble suggestions to improve @Twitter

@elonmusk
🧵
- Twitter algorithm #opensource
(What does the algorithm do exactly? Is it harmful or actually doing any good? No algorithm - sort by timeline)

- Try our best to achieve free speech (not a fan of censorship, but we also have to follow the law of the land)
- Give users more privacy options so it can also be a platform for highly targeted individuals like journalists, whistle-blowers, activists, etc.

- Community guidelines to be run by the Twitter community, not by a small group of people at the top (decentralized decisions)
Read 7 tweets

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