Every month, I get together with friends for crypto BBQs. It's a chance to catch up, grill some food, and talk about the latest in the crypto world. At a recent BBQ, a friend shared a story that really made me think twice about WhatsApp.

He'd been contacted on WhatsApp by someone offering a "can't miss" crypto investment opportunity. The thing is, my friend had never interacted with this person before. It was clearly a scam, but how did they get his number?

In theory, WhatsApp doesn't sell your data to companies. They might use your interests to target Facebook ads, but that data stays within Meta. However, we know there have been leaks. Cybernews reported a massive WhatsApp data leak in February 2023 - 500 million user records were up for sale online.

It gets worse. Articles like "How scammers access and hack your WhatsApp account, and what to do to protect yourself" from Bitdefender detail the many ways hackers can exploit WhatsApp:

• Social Engineering: They trick you into giving them your verification code.
• Call Forwarding: They reroute your calls to their phone, then use that to access your WhatsApp.
• WhatsApp Web Hacking: They use fake QR codes to steal your login info.
• Spyware: They infect your phone with malware that records your WhatsApp activity.
• Dark Web Attacks: They buy your leaked personal info on the dark web and use it to target you.

It's scary stuff. My friend's experience is a reminder that even if you're careful, your data can still be out there. So what can you do?

• Enable two-factor authentication on WhatsApp.
• Be wary of any unsolicited messages, links, or files.
• Consider using a more secure messaging app.

Staying anonymous online is getting harder, but it's not impossible. Be aware of the risks, take steps to protect yourself, and remember - sometimes the best way to stay safe is to stay off platforms like WhatsApp altogether. Next time, I'll dive deeper into the alternatives to WhatsApp...