Cybersecurity experts warn that malicious PDFs are increasingly being used as delivery mechanisms for phishing attacks, particularly targeting Gmail users. These PDFs can masquerade as legitimate documents but contain links or scripts designed to steal user credentials and sensitive information. Awareness and caution are crucial for users to avoid falling victim to these deceptive tactics.

A recent data breach has exposed 183 million Gmail passwords along with other login credentials, as confirmed by the Have I Been Pwned database. The breach, which includes a significant amount of previously unseen credentials, highlights risks associated with credential reuse and the importance of security measures like two-step verification. Google has provided guidance for users on how to protect their accounts and check for compromised credentials.