Brian Clark

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1,030 Following
4.4K Posts

#InfoSec #Cybersecurity #threatintel and Politics. I try my best.
Also @[email protected]

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THE BLOOMSCROLLING WILL CONTINUE UNTIL MORALE IMPROVES
@badsamurai @FritzAdalis @Viss @cR0w this is the content I come to Mastodon for!

RE: https://infosec.exchange/@VirusBulletin/116294907171305521

Etherhiding is an established but lesser known method of providing C2 information to malware. Most businesses do not need to allow access to the blockchain-related API / RPC endpoints used by this technique. I highly recommend you block them.

eth.llamarpc.com
mainnet.gateway.tenderly.co
rpc.flashbots.net
rpc.mevblocker.io
eth-mainnet.public.blastapi.io
ethereum-rpc.publicnode.com
rpc.payload.de
eth.drpc.org
eth.merkle.io

#cybersecurity

My database is at CertGraveyard .org . We document these to keep a public record and to use it for cyber defense.

To that end we've also partnered with MagicSword (https://www.magicsword.io/plan?utm_source=certgraveyard&utm_medium=affiliate&utm_campaign=community-widget&utm_content=social ); their tool uses our database.
5/6

MagicSword | Prevent Modern Cyber Attacks

Stop malware-free attacks with agentless, AI-driven application control. Block what's abused, allow what your business needs.

MagicSword
@tayfonay you avoided being in a Seinfeld episode!

Red Canary’s March Intelligence Insights report is out. They provide detection opportunities for common Windows and MacOS exploits #cybersecurity

https://redcanary.com/blog/threat-intelligence/intelligence-insights-march-2026/

Intelligence Insights: March 2026 | Red Canary

ScreenConnect stays the course, Mac infostealers surge, and Vidar resurfaces in this month’s edition of Intelligence Insights

Red Canary
@icastico @arstechnica the sequel has been disowned by everyone involved 😂
@nopatience very good. I especially like the evidence column in the MITRE ATTACK techniques section
@volts.wtf they are very good. The audio book versions are excellent as well.