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Dec 20 • 3 tweets • 3 min read
1 - Store a private key, not the seed phrase: officercia.mirror.xyz/p1ieZdxQWH4yHC…

2 - Use Steganography: officercia.mirror.xyz/8ecJG-s_5E6J1t…

3 - Be aware of physical attacks: github.com/jlopp/physical…

4 - Follow my #OpSec Guide: github.com/OffcierCia/Cry…

5 - Stay accurate: officercia.mirror.xyz/4x2-M4R2cSnID1…
Follow my Blog 🫡

officercia.mirror.xyz
I'll have more articles shortly! I also publish them here:

officercia.medium.com

More OpSec content on my TG channel: t.me/s/officer_cia

Please consider donating ❤️ Thank you!

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More from @officer_cia

Officer's Notes Profile picture
Dec 8
Dear followers, If I do not respond to you in DMs here or in TG, it does not mean that I am showing off or don’t like you; rather, it is because I am depressed (again) and really unable to do anything…
I'll get back to everyone as soon as possible. I’m sorry for it.
Dear subscribers, thank you so much for your support! 🫡

I don’t know what I would do if I didn't have this great power behind me! ❤️
Read 4 tweets
Officer's Notes Profile picture
Dec 2
We'll need a financial connection between Mars and Earth at some time, won't we? @elonmusk 👀

A list of scientific literature and resources on this issue is provided below! I hope you enjoy my new short note format!

graph.org/Blockchain-in-…
Special Notes for this month:

1/2
• Retrospective of the hacks in web3: graph.org/Retrospective-…

• Is it possible to deduct the transaction fee from the sent amount when using USDT ERC20: graph.org/Is-it-possible…
Special Notes for this month:

2/2
• How one can deanonymize Monero to a certain degree of probability: graph.org/How-one-can-de…

• All resources to become a smart contract auditor: graph.org/All-resources-…

Check out my blog: officercia.mirror.xyz or officercia.medium.com
Read 4 tweets
Officer's Notes Profile picture
Dec 1
Again. This hacker wrote in the chat room a week before he hacked the project and asked to send him 1 matic. I sent him the 1 matic to claim an NFT, and he hacked the project 2 weeks later. Scary.
By the way, I found this hacker via telegram, I even know his face, but unfortunately no one took this information from me.
This information is listed on Polygonscan. I'm not the only one affected - there was another one, who also got a DM from the hacker, asked for some dust, and then hacked into someone's multi-sig.
Read 4 tweets
Officer's Notes Profile picture
Oct 17
Many of us travel by airplane and many of us have to deal with carrying luggage. That's a pretty serious threat to your #OpSec unless of course your computer or phone has potentially valuable information on it.

Read my thread ⬇️
1/5
And if you don't fly, you probably travel from point A to point B in some other way - by car, train, and so on.

First of all, try checking out slnt.com/products/ally-… or any custom-made Faraday bag.
2/5
Transfer all important information to physical form. Steganography and cryptography work better when used together!

hackernoon.com/a-cia-agents-g…
Read 8 tweets
Officer's Notes Profile picture
Oct 15
Surprisingly few people know that anyone can effectively defend against sim swapping. It works both in the US and worldwide in almost all mobile operators!

But how? Check out my thread 👇
1/5
To lock down your SIM, contact your mobile phone carrier. Ask them to NEVER make changes to your phone number/SIM unless you physically show up to a specific store with at minimum two forms of identification.
2/5
This (should) prevent hackers from calling up AT&T or T-Mobile or Vodafone, claiming to be you, and asking them to port your phone number to a new phone.
Read 7 tweets
Officer's Notes Profile picture
Oct 14
What an awesome tactic been used to catch a bad actor in @Tesla!

There are also amazing tools for it, for example: github.com/utkusen/wholea…

And ofc myy fav canary trap service - canarytokens.org
Follow my #OpSec Guide github.com/OffcierCia/Cry… & tips from my officercia.mirror.xyz blog!

Stay Safe!
But how can whistleblowers protect themselves from this?

officercia.mirror.xyz/8ecJG-s_5E6J1t…

Cryptography + Steganography would be a good solution IMO
Read 4 tweets

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