The FBI and Cybersecurity and Infrastructure Security Agency issued a joint advisory on Monday. The advisory is based on observations on the timing of high impact ransomware attacks that have occurred previously rather than a reaction to specific threat reporting. Threat actors have often taken advantage of a decrease in readiness to respond to cybersecurity attacks during weekends and holidays to attempt breaches of critical networks and systems belonging to public and private sector orgs. The agencies also provide a list of mitigations, including the need to set up an IT security team ready to react to ransomware attacks even outside regular office hours.”]