DIY Security Mistakes That Could Cost You Your Home

From fake security camera stickers to improperly installed deadbolts, these DIY security shortcuts create real vulnerabilities in your Miami home.

2026-01-20 · 5 min read · Residential

The security industry has a lot of solutions that look good on paper but provide minimal real-world protection. Some are sold by legitimate companies; others are well-intentioned DIY approaches. Here are the most common mistakes Miami homeowners make — and what to do instead.

1. Relying on a Fake Security Camera or Sticker

Fake security cameras and "protected by" alarm stickers are common. Do they work? Sometimes, against unsophisticated opportunists. But experienced burglars recognize fake cameras (they don't move, they have no actual mounting infrastructure, the brand is generic) and alarm stickers that don't match a known monitoring company.

The bigger problem: a fake sticker without an actual alarm system means if someone does break in, there's no alert, no response, and no recording. You've traded real deterrence for perceived deterrence.

2. Hiding a Spare Key Outside

Under the mat, in a fake rock, above the door frame — experienced burglars know every common hiding spot and check them. If you need external key access, use a quality combination lockbox mounted out of sight, or better, install a keypad or smart lock.

3. Installing a Deadbolt Without Reinforcing the Strike Plate

This is extremely common and significantly underestimates how most forced entries actually happen. A kick-in doesn't defeat the deadbolt — it splits the door frame at the strike plate, which is typically secured with 3/4" screws into pine trim, not the structural framing.

Installing a reinforced strike plate with 3" screws (Door Armor, Strikemaster II, or similar) costs under $30 and takes 15 minutes. Without it, even the best deadbolt provides minimal kick-in protection.

4. Improperly Installed Deadbolt Alignment

A deadbolt installed without proper alignment between the bolt and strike plate can fail to extend fully, stick under temperature changes, or create gaps that allow bypass. Many big-box store lock installations suffer from this because hardware is installed without checking the door/frame geometry.

A professionally installed deadbolt is aligned correctly from day one and adjusted for Miami's temperature and humidity expansion.

5. Relying Entirely on a Smart Lock Without a Backup

Smart locks are convenient and add real value — but relying on them exclusively creates single points of failure. App outages, Wi-Fi failures, and dead batteries have locked homeowners out of their own homes. A combination of smart access and a physical key backup is more resilient.

6. Window Security Film Applied Incorrectly

Window security film is a legitimate upgrade — it makes glass much harder to break through. But it must be applied to the glass edge-to-edge with proper overlap on the frame to be effective. Film that stops short of the frame provides little resistance since the glass can still flex and pop from its frame.

7. Not Securing the Garage

The garage door is one of the most common entry points in South Florida burglaries, yet many homeowners leave the door from the garage into the house unlocked or with a minimal lock. Treat the garage-to-house door as an exterior door — it should have a deadbolt.

Also, the manual release cord on a garage door can be reached with a wire hanger through the top gap of the door — a simple shield over the cord prevents this.

Getting It Right

Security isn't about having more locks or more gadgets — it's about having the right hardware, correctly installed, in the right places. Caraballo Locksmith does free security assessments for Miami homeowners: we walk your property, identify the real vulnerabilities, and give you a prioritized list of improvements.