Eric Geller Profile picture
Feb 24 5 tweets 2 min read
Options mentioned here: Disrupting Russian internet access, sabotaging the Russian power grid, and hacking railroad switches to impede supply lines.

"'You could do everything from slow the trains down to have them fall off the tracks,' one person briefed on the matter said."
Needless to say, this is an incredibly precarious moment and the U.S. will need to be very careful about calibrating any cyberattacks to avoid catastrophic reprisals. Putin has given apocalyptic warnings about what he'll do if the West tries to stop him.
.@emilyhorne46 slaps down NBC's story about Biden being presented with aggressive cyber retaliation options.

"This report is wildly off base and does not reflect what is actually being discussed in any shape or form." (via @magmill95)
Sign of how seriously the White House is pushing back against this NBC story: Jen Psaki not only retweeted me tweeting out the denial but also tweeted it herself. They don't do that for just any story.
The major pushback to the NBC story suggests that the White House is *very* worried about Russia misinterpreting the story, assuming that Biden has approved or will approve major cyberattacks, and preemptively escalating against us.

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More from @ericgeller

Feb 24
Thinking of everyone in Ukraine right now. There is little worse than feeling powerless while watching innocent people suffer.
Cannot begin to imagine what must be going through that official's mind. Hope they and their colleagues can get to safety.
Read 99 tweets
Feb 23
Notable point from ESET's thread about new data-wiping malware that it discovered on hundreds of computers in Ukraine today.
Symantec's Eric Chien tells me: "We are seeing the wiper across multiple organizations in different sectors in the Ukraine including finance and government organizations. The wiper uses a legitimate driver to gain low level hard disk access to wipe data."
Read 23 tweets
Feb 23
🚨 The websites of Ukraine's parliament, foreign ministry, and executive cabinet are down, possibly due to a new distributed denial-of-service attack.

rada.gov.ua
mfa.gov.ua
kmu.gov.ua
Cabinet of Ministers website appears to be back up. Rada and MFA sites still down.
Looks like Privatbank's website is having issues too. privatbank.ua
Read 8 tweets
Feb 22
After Russia invaded in 2014, Ukraine began centralizing govt data in Kyiv, severing links w/ IT systems in occupied territories.

Now it's preparing to evacuate that data if Moscow targets Kyiv.

I talked to @dsszzi's @VZhora about protecting this data: politico.com/news/2022/02/2…
Centralizing data in Kyiv robbed Russia of easy access to files and services previously accessible from now-occupied computers in Crimea, Luhansk, and Donetsk. It also prevented those now-untrustworthy computers from becoming backdoors into Ukrainian networks.
Ukraine's locally distributed computer system was the product of historically slow internet speeds that prevented large, frequent data transfers. But the country's modernization meant it could move everything to web platforms based in Kyiv (with multiple backup sites).
Read 11 tweets
Feb 18
White House briefing starting now. Anne Neuberger, deputy national security adviser for cyber, is one of the speakers.
Neuberger: “While there are currently no specific or credible cyber threats to the homeland, the U.S. government has been preparing for potential geopolitical contingencies since before Thanksgiving.”
Essentially confirming recent WaPo story, Neuberger says USG "believes that Russian cyber actors likely have targeted the Ukrainian government, including military and critical infrastructure networks, to collect intelligence & preposition to conduct disruptive cyber activities."
Read 13 tweets
Feb 17
During panel at Munich Cybersecurity Conference, FBI Cyber Division's Tonya Ugoretz says "international standardization" of AML rules for cryptocurrency "would greatly help" stop ransomware. Many countries don't have consistent rules, so even well-meaning exchanges can't help.
Ugoretz: "Sometimes foreign exchanges want to be cooperative...but because they don't have that existing framework that provides consistency in the types of information that they're collecting about their customers, they may not even have the information on hand to provide..."
On ransomware, DHS Under Secretary for Policy Rob Silvers says “we are taking this problem on from all angles, and it's among our very highest cybersecurity priorities.” He notes stopransomware.gov, various alerts and guidance docs, and partnerships with other agencies.
Read 7 tweets

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