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News


CISA SAYS 'SHIELDS UP' AS RUSSIA-UKRAINE TENSIONS ESCALATE




CISA SAID IN ITS ADVISORY THAT 'THERE ARE NOT CURRENTLY ANY SPECIFIC CREDIBLE
THREATS TO THE U.S. HOMELAND,' BUT CITED PAST RUSSIAN CYBER ATTACKS AGAINST
UKRAINE AND OTHERS.

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By
 * Alexander Culafi, News Writer

Published: 14 Feb 2022

CISA is encouraging increased cybersecurity awareness in a new "Shields Up"
advisory as tensions escalate between Ukraine and Russia.

Russia has threatened new invasions against Ukraine as an escalation of the
Russo-Ukrainian War that began in 2014. The cybersecurity implications of these
threats have already been felt, as Ukrainian tech companies are ramping up for
potential conflict. In addition, the U.S. Cybersecurity and Infrastructure
Security Agency (CISA) reported last month that Ukraine was being hit with
destructive malware attacks, though these attacks were not directly connected
with a specific entity.



The advisory, published Saturday, provided general guidance for preventing,
detecting and responding to cyberintrusions, but also direct references to past
and present Russo-Ukrainian conflicts.

"While there are not currently any specific credible threats to the U.S.
homeland, we are mindful of the potential for the Russian government to consider
escalating its destabilizing actions in ways that may impact others outside of
Ukraine," the advisory read.

For example, the advisory mentioned past cyberaggressions involving critical
infrastructure committed by Russia against Ukraine around 2015. These attacks
included the deployment of malware known as BlackEnergy, which hit utility
companies in Ukraine and caused significant power outages in some regions of the
country.

CISA recommended taking extra precautions when working with Ukrainian
organizations. The agency also advised taking "extra care to monitor, inspect,
and isolate traffic from those organizations" and to "closely review access
controls for that traffic." Some of the advice given includes ensuring software
is up to date, disabling ports and protocols not essential for business use, and
designating a crisis response team.

CISA declined to comment beyond the content of the advisory.

CISA

The logo for CISA's 'Shields Up' advisory


In another instance of government entities warning of cyberthreats against
critical infrastructure, the FBI and U.S. Secret Service published a joint
cybersecurity advisory on Friday to raise awareness about BlackByte ransomware,
a ransomware-as-a-service entity that has previously "compromised multiple U.S.
and foreign businesses, including entities in at least three U.S. critical
infrastructure sectors (government facilities, financial, and food &
agriculture)."

Like many ransomware variants, BlackByte avoids infecting systems with Russian
and ex-East bloc languages. The ransomware, first discovered last year, was
recently observed exploiting the ProxyShell vulnerability in Microsoft Exchange
servers.

One recent victim of BlackByte ransomware was the San Francisco 49ers football
team, which the operator's leak site mentioned over the weekend. A spokesperson
for the team shared the following statement with SearchSecurity:

We recently became aware of a network security incident that resulted in
temporary disruption to certain systems on our corporate IT network. Upon
learning of the incident, we immediately initiated an investigation and took
steps to contain the incident. Third-party cybersecurity firms were engaged to
assist, and law enforcement was notified.

While the investigation is ongoing, we believe the incident is limited to our
corporate IT network; to date, we have no indication that this incident involves
systems outside of our corporate network, such as those connected to Levi's
Stadium operations or ticket holders. As the investigation continues, we are
working diligently to restore involved systems as quickly and as safely as
possible.

Alexander Culafi is a writer, journalist and podcaster based in Boston.



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