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The Cybersecurity and Infrastructure Security Agency (CISA) and the Federal Bureau of Investigation (FBI) have warned against an increase in ransomware assaults during holidays and weekends.
In a statement, the agencies observed that a rise in cyber-incidents involving ransomware was witnessed during previous U.S. holidays such as the Fourth of July weekend in 2021.
They also stated that they presently have no clue that a cyberattack will happen over the imminent Labor Day holiday, but encourage businesses to review their cybersecurity posture and apply recommended best practices to ensure they are safeguarded.
“However, the FBI and CISA are sharing […] information to provide awareness to be especially diligent in your network defense practices in the run up to holidays and weekends, based on recent actor tactics, techniques, and procedures (TTPs) and cyberattacks over holidays and weekends during the past few months,” according to the advisory.
The two agencies also observed that threat actors may choose to carry out a ransomware assault during a holiday or a weekend because it gives them an edge for network misuse and the proliferation of ransomware, given that network wardens and IT support at the victim are at limited capacity.