10 Marks Burglars Leave on Houses They Plan to Hit (Ex-Burglar Reveals)

A strange chalk mark. A scratch near the door. A sticker on the gate. Does it really mean burglars have marked your house? I’m Jack Locke, a former burglar, and in this video I break down 10 so-called “marks” and warning signs people associate with houses being targeted — while separating internet folklore from the changes that actually deserve your attention. The truth is, burglars don’t need a secret alphabet. What matters more is evidence that someone may have approached, observed, tested, or interfered with your property. You’ll learn why random chalk symbols are usually weak evidence, why repeated unexplained changes matter more than one strange object, when new damage around an access point deserves attention, and why repeated human behavior can be more important than anything physically left behind. Most importantly, I’ll show you the three-part rule that makes a warning sign more meaningful: Change. Repetition. Context. The goal is not to make you suspicious of every mark outside your home. It is to help you establish what is normal so meaningful changes become easier to recognize. After watching, walk around your property in daylight and establish a baseline. Know how your doors, gates, windows, entrance, and surrounding areas normally look. If something suspicious changes, document it, tell your household, review available footage, and take credible signs of attempted entry seriously. If one number changed what you’ll pay attention to, comment only that number below. Don’t post your address, security setup, routine, or vulnerable areas. Subscribe to Think Like a Burglar for practical home-security lessons from the perspective most homeowners never get to see. I used to depend on homeowners overlooking small changes. Now I’m teaching you which changes are actually worth noticing. Never confront a suspicious person yourself. If you see signs of attempted entry, threats, damage, or immediate danger, move to safety and contact the appropriate authorities. Hashtags: #ThinkLikeABurglar #HomeSecurity #BurglaryPrevention #FormerBurglar #BurglarMarks #CasingSigns #HomeSafety #CrimePrevention #SecurityTips #ProtectYourHome #BurglaryWarningSigns #HomeDefense