How to Choose Safe Apps - Spotting Fake Apps and Dangerous Permissions

About 10 min read

Every day, millions of apps are downloaded onto smartphones around the world. Most of them are safe and useful, but some are designed to steal your personal information, spy on your activity, or trick you into paying money. Fake apps can look almost identical to the real thing, making them hard to spot. This guide explains how to tell the difference between safe and dangerous apps, what app permissions really mean, and what to do if you accidentally install something suspicious. Understanding these basics is an important part of protecting yourself from malware and social engineering attacks.

What Are Fake Apps?

Dangerous Apps That Look Just Like the Real Thing

Fake apps are malicious apps designed to look like popular or well-known apps. Their icons and names are almost identical to the real ones, making them very hard to tell apart at first glance. For example, they might use the exact name of a popular game or copy the logo of a famous bank or shopping app to trick users. Even official stores like Google Play Store and Apple App Store sometimes have fake apps that slip through the review process. In 2023, Google reported removing about 2 million malicious apps from the Play Store, showing that official stores are not 100% safe.

If you install a fake app, various types of damage can occur. Your personal information stored on your phone - contacts, photos, messages - can be stolen. You might be signed up for paid services without knowing and get charged money. Your phone might become extremely slow. In the worst case, your phone could be remotely controlled, and someone could send messages to your friends pretending to be you. Many fake apps use the same tactics as phishing scams to target your personal information. Be especially careful of apps with promises that sound too good to be true, like "play paid games for free" or "make your phone faster."

Understanding App Permissions

Why Do Apps Ask for Permissions?

When you install an app, you might see screens asking "Allow access to your camera?" or "Allow access to your contacts?" These are called "permissions." Permissions are approvals that let an app access your phone's features and data. It makes sense for a camera app to ask for camera permission to take photos, and it is reasonable for a map app to ask for location permission to show where you are.

The problem is asking yourself: "Does this app really need this permission?" For example, if a flashlight app asks for access to your contacts and call history, that is clearly suspicious. You do not need contacts to turn on a flashlight. Unnatural permission requests like this could be a sign that the app is trying to steal your information. When granting permissions, ask yourself: "Is there a reason this app needs this feature?" If you cannot think of one, deny that permission. Allowing only the minimum necessary permissions is the basic approach to using your phone safely.

Checklist Before Installing

5 Things to Check

Before installing an app, make it a habit to check the following 5 points. Just doing this can significantly reduce your risk of falling for a fake app. If your children use smartphones, it is also worth checking our guide on internet safety for kids.

1. Check if the developer name is official - Check the developer name shown on the app page. For example, the LINE app should show "LINE Corporation" as the developer. Watch out for unknown names or names that look similar to the official one but are slightly different (like changing "L" to lowercase "l" in "LlNE Corp").
2. Read the number and content of reviews - Apps with very few reviews (only a handful) or apps with only short high ratings like "Amazing!" or "Great!" are suspicious. Real apps have a mix of good and bad reviews. Check if there are reviews that describe specific usage experiences.
3. Check if the download count is extremely low - If a well-known app only has a few hundred downloads, it is very likely a fake. Real popular apps usually have millions to hundreds of millions of downloads.
4. Check for unnatural language in the description - Fake app descriptions often use raw machine translations, with unnatural expressions and grammar mistakes standing out. Be wary if you see awkward sentences like "This app will make your phone very good."
5. Check if the screenshots look authentic - Official app screenshots are high quality and consistent. Fake app screenshots may have rough image quality, outdated UI designs, or blurry text. Comparing them with the official app website can also be helpful.

What to Do If You Installed a Suspicious App

What to Do Right Away

If you think you might have installed a suspicious app, do not panic. Follow these steps to deal with it. The faster you act, the more you can minimize the damage.

1. Uninstall the app immediately - First, delete the app from your phone. On iPhone, long-press and tap "Delete App." On Android, go to Settings, then "Apps," select the app, and tap "Uninstall." Putting your phone in airplane mode before deleting can prevent the app from sending data externally.
2. Change your passwords - Change the passwords for all services you logged into while the suspicious app was installed. Prioritize important accounts like email, social media, and online banking. Ideally, change passwords from a different safe device like a computer or a family member's phone.
3. Check for unauthorized charges - Check your credit card statements and Google Play / App Store purchase history. If you find any charges you do not recognize, contact your card company or store support immediately.
4. Factory reset your device if necessary - If your phone still behaves strangely after deleting the app, or if your antivirus app keeps detecting threats, consider factory resetting your device. A factory reset erases all data, so make sure to back up important photos and contacts beforehand. After resetting, we recommend reviewing your smartphone lock settings to restart with stronger security.

What You Can Do Right Now

1. Review the apps installed on your phone and delete any apps you do not use or do not recognize
2. Check the permission settings for each app and revoke unnecessary permissions. On iPhone, go to "Settings" then "Privacy & Security." On Android, go to "Settings" then "Apps" then "Permissions"
3. Make it a habit to always check the developer name, reviews, and download count before installing apps from now on
4. Generate strong passwords with Passtsuku.com and set a different password for each service so that even if a password leaks through an app, the damage is minimized

If you want to learn more about keeping your smartphone safe, smartphone security guides (Amazon) can help you build a solid foundation.

Frequently Asked Questions

Are all apps on official stores safe?

Unfortunately, not all apps on official stores are safe. Google Play Store and Apple App Store have review processes, but cleverly made fake apps can slip through. Downloading from official stores is a basic requirement, but you should also always check the developer name and reviews. Avoid installing apps from places other than official stores (like direct downloads from websites), as this carries even higher risk.

Are free apps dangerous?

Free apps are not dangerous just because they are free. Many free apps operate through advertising revenue or in-app purchases and are safe to use. However, be careful of apps that claim to offer "paid apps for free" or free apps distributed outside official stores. Do not install apps just because they are free - check other points like developer name, reviews, and permissions before deciding.

Can I change app permissions later?

Yes, you can change permissions you have already granted at any time. On iPhone, go to "Settings" then "Privacy & Security" and select each permission category to see and change which apps have which permissions. On Android, go to "Settings" then "Apps," select the app, then "Permissions" to make changes. Make it a habit to regularly review your permission settings and revoke unnecessary ones.