Unlocking Vulnerabilities: The One Mobile Setting Change Hackers Exploit

By Fred Templeton, CISA, CASP, SEC+   Published: 03/24/25   Updated: 11/02/26   3 min read

Unlocking Vulnerabilities: The One Mobile Setting Change Hackers Exploit

Summary

Introduction

Phones handle almost everything now, from messages to banking. One setting change makes them much easier to attack: turning off automatic updates. It sounds harmless. It leaves the door open to flaws that have already been fixed for everyone else.

Why Turning Off Updates Is Risky

Updates are one of the best defenses a phone has. Many of them fix security flaws found after the software shipped. When automatic updates are off, people tend to put them off for weeks or months, and the phone stays exposed the whole time. Once a fix is public, attackers can study it to learn exactly what to target on phones that have not installed it.

Why People Turn Updates Off

Most people cite convenience. Updates can interrupt at a bad moment, and some users worry an update will slow down an older phone. Those worries are understandable. The trade-off is poor. A few minutes saved can mean months of exposure.

Both Platforms Are Affected

Apple’s iOS and Google’s Android work differently, but both depend on updates for security. Attackers build exploits for specific versions of each system. Apple and Google both ship fixes for actively exploited flaws several times a year. Neither brand is safe without the patches.

Old Software Is a Favorite Target

Attackers go after known vulnerabilities because they are cheap and reliable. The Cybersecurity and Infrastructure Security Agency (CISA) keeps a catalog of known exploited vulnerabilities, and it regularly includes flaws in iOS and Android. Every one of them has a fix that unpatched phones lack.

What Security Experts Say

Security professionals give the same advice almost every time: install updates promptly. It is free and takes minutes. It also removes the attacks that depend on old code.

The Path Forward

Turning automatic updates back on is a small change with a big payoff. On iPhone, look under Settings, General, Software Update. On Android, check Settings, System or Security updates, depending on the maker.

Your phone holds your email, photos and bank logins. Keeping it updated is the easiest way to protect them.

One Setting Worth Changing

Turning off automatic updates puts personal data at risk. Turning them back on takes a minute. It is one of the few security steps that costs nothing and asks almost nothing of you.

So check your phone today. If automatic updates are off, turn them back on.

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Fred Templeton, CISA, CASP, SEC+

Fred Templeton is a practicing Information Systems Auditor in the Washington DC area. Fred works as a government contractor and uses his skills in cyber security to make our country's information systems safer from cyber threats. Fred holds a master's degree in cybersecurity and is currently working on his PHD in Information Systems.