HollowGraph represents a sophisticated cyber threat that leverages Microsoft 365 calendar infrastructure as a covert command and control channel. By embedding malicious instructions and exfiltrated data within calendar events timestamped far into the future, attackers exploit the legitimacy of Graph API communications to evade detection systems. This innovative evasion technique demonstrates how legitimate cloud services can be weaponized for data theft and remote command execution, posing significant risks to enterprise security frameworks.

Summary auto-generated by AI from the original publisher's content. Editorial standards.