Sauce Gardner is warning everyone to be safe on the internet ... 'cause the New York Jets star says a hacker has taken over his Snapchat and is posting personal photos from his archives.
The two-time Pro Bowl cornerback sent out the warning on Sunday ... saying his account was sharing old images from his college days against his will.
"Somebody just DM'd me sending pictures from my snap when I was in college," Gardner said on X. "People be so weird around the world lol.