These 5 Red Flags Could Mean Someone Has Hacked Your WhatsApp

Hackers can take over your WhatsApp account without ever touching your phone. That alarming reality makes the five red flags of a compromised account essential knowledge for the app's 2 billion users worldwide.

Forbes has outlined the key warning signs that indicate your WhatsApp account may have been hacked, detailing how attackers gain access and what steps you should take immediately to secure your account. The report comes amid rising cybersecurity threats targeting popular messaging platforms, particularly through methods like SIM swapping and phishing campaigns.

WhatsApp, owned by Meta, encrypts messages end-to-end, but that protection does not prevent account takeover attacks. Cybercriminals increasingly use stolen phone numbers to hijack accounts, often bypassing two-factor authentication by intercepting verification codes. In 2023, reports indicated a significant increase in SIM-swapping attacks, where attackers trick mobile carriers into transferring a victim's phone number to a SIM card they control. Once the hacker has control of the phone number, they can use it to request a WhatsApp verification code, effectively locking out the legitimate user.

The five red flags identified in the Forbes article include: unexpected verification code messages, seeing messages you did not send, being logged out of your account from unknown devices, noticing a change in the account's linked devices, and receiving a verification request you did not initiate. Each sign points to a potential ongoing or attempted infiltration. The article also warns that hackers might use compromised contacts to spread malware or request money.

To respond, users should immediately check their account's linked devices in WhatsApp Settings > Linked Devices (or WhatsApp Web/Desktop) and revoke any unknown sessions. Enabling two-factor authentication (2FA) with a six-digit PIN is strongly recommended, as it adds an extra layer that even a SIM-swapping attacker cannot bypass. Users should also update the app regularly, avoid clicking suspicious links, and never share their verification code with anyone.

The broader implication is clear: messaging apps have become prime targets for identity theft and financial fraud. As WhatsApp integrates more payment features, the stakes rise. Security experts consistently advise that users treat their phone number as a critical credential and remain vigilant against social engineering tactics.

Looking ahead, Meta is expected to expand proactive security alerts for suspicious login attempts. Users should monitor for official notifications from WhatsApp and report any compromise immediately via in-app reporting tools. The best defense remains a combination of personal awareness and enabled security features — because a hacked WhatsApp account can lead to much more than just lost messages.