Federal authorities have issued an advisory warning people of Medusa ransomware that has breached the data of more than 300 people since February.

Cyberattacks are on the rise and the FBI and U.S. Cybersecurity and Infrastructure are urging citizens to remain vigilant against ransomware attacks. The agencies warn Gmail and Outlook users to be on the outlook for harmful emails containing ransomware — a kind of malicious software that prevents you from accessing your computer files,

Federal agencies are warning Gmail and Outlook email users of a costly ransomware scheme that has already affected more than 300 victims. The FBI and the U.S. Cybersecurity and Infrastructure Security Agency issued the advisory,