Why bridges are risky
Bridges lock large pools of assets to mint equivalents on another chain. That concentration makes them a prime target, and several have suffered major exploits.
Phishing on top
Attackers also clone bridge front-ends. A fake bridge site can request approvals that drain the tokens you meant to move.
Safer bridging
Use well-established bridges reached through official links, move large amounts in stages, and verify the destination and approval carefully. Consider whether you need to bridge at all.