Malware, short for malicious software, refers to any software designed to harm or exploit any computing device or network. Some malware types include viruses, worms, Trojans, spyware, ransomware, and adware. To check for Malware on an iPhone, monitor for unusual behaviour such as sudden battery drain, increased data usage, or the phone running slowly.

These could indicate a malware infection. Additionally, check your apps regularly. If you see apps you didn’t download, it could be a sign of Malware. Also, frequent pop-up ads can be an indication of adware infection. To ensure safety, only download apps from trusted sources like the App Store, keep your device updated and consider using a reliable mobile security app.

Remember, while iPhone’s iOS is designed to be secure, no system is immune to Malware. TAG Solutions provides various mobile security solutions for iOS and Android devices. Regularly monitoring your device with TAG Solutions ensures that your iPhone is always safe and secure. This blog post has outlined some tips on how to check for Malware on an iPhone. Let’s keep an eye on it.

What Is Malware | What To Need To Know

Malware is a broad term for malicious software that can be used to infect computers, laptops, and smartphones. It can come from viruses, worms, Trojans, spyware, adware, and ransomware. Malware can spread through email or text messages sent from an infected source or by downloading apps or files from untrustworthy websites or suspicious apps.

Knowing what Malware is and how it can affect your device is essential. Malware can cause various issues, such as unauthorized access, data theft, performance disruption, or unwanted pop-up advertisements. It is essential to prevent your device from being infected with Malware and know how to recognize signs of an infection if one does occur.

Mechanism Of Malware Operation

Phishing website, outstretched hand inside smartphone holding fish hook to steal account information

How malware works depends on the type of Malware. Following is the mechanism of operation for some common types of Malware:


Malware typically infiltrates a device through seemingly harmless vectors. This could be through an email attachment, a text message link, or downloads from untrustworthy websites or apps. Users are often tricked into clicking on these infected files through social engineering tactics.


Once the Malware has infiltrated the device, it begins its execution. Depending upon its type, the Malware may replicate itself, modify system settings, or install additional harmful software. It may lie dormant until a specific condition is met, such as the device connecting to the internet, or immediately start causing havoc.


Malware often uses techniques to maintain its presence even after the system reboots to ensure its longevity on the infected device. It can hide itself by altering system settings or disguising itself as legitimate software, challenging detection and removal.

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Effects Of Malware On Your Device

Below are the most common effects of Malware on a device:

  1. Unauthorized Access And Control

Malware can provide cybercriminals with unauthorized access to your device. Some malware, like Trojans and backdoors, can create a pathway for hackers to infiltrate your system, giving them free rein over your device. This implies they have a carte blanche to read, write, or delete files, install unwanted software, or even control the entire device remotely and use as part of a botnet for coordinated attacks.

  1. Theft Of Sensitive Data

Malware can be designed to steal sensitive information from your device. Spyware, keyloggers, and certain types of Trojans can silently gather and transmit your mobile data, such as login credentials, credit card information, or social security numbers, to the attacker. This could lead to severe consequences like identity theft or financial loss.

  1. Disruption Of Device Performance

Malware can cause significant disruption in your device’s performance. You might notice your device running much slower, draining the battery rapidly, or overheating, even when the usage is minimal. This happens because Malware often runs in the background, utilizing a substantial chunk of the device’s resources.

  1. Unwanted Advertisements

Adware is a type of Malware that inundates your device with unwanted advertisements. These could be annoying pop-ups when you browse the internet or intrusive ads appearing directly on your device interface. These ads are a hassle and can pose a security risk, as some may lead to malicious websites if clicked.

Malware And Apple Technology

MacBook pro 2021 half-open with iPhone 13 antivirus software

Apple’s iOS, the operating system powering iPhones, is known for its robust security features. The closed nature of the system, coupled with stringent app review processes, significantly reduces the likelihood of malware infections. However, no system is entirely immune, and the nature of Malware affecting iPhones can be distinctly different from those affecting other platforms.

The Walled Garden Approach

Apple’s “walled garden” approach to its App Store makes it harder for malicious apps to find their way onto iPhones. Each app undergoes a thorough review before it’s made available on the App Store.

This stringent vetting process, including automated software testing and human code review, minimizes the risk of malware-infected apps being listed. This contrasts with platforms like Android, where openness can sometimes lead to less secure app marketplaces.

The Role Of Jailbreaking

Jailbreaking, or bypassing the restrictions Apple places on its devices, makes iPhones much more susceptible to Malware. A jailbroken iOS device grants users unrestricted access to the iOS file system and manager, allowing unauthorized apps and software to be installed.

However, it also opens the device to potential security threats that the iPhone security infrastructure would typically block. Unlike iOS, other operating systems like Android allow certain customization without the equivalent of jailbreaking.

Limited Impact Of Malware

On the rare occasion that an iPhone is infected with Malware, the impact is often limited compared to other systems. iOS operates in a sandboxed environment, meaning apps are isolated from each other and the rest of the system.

If a single app gets infected, it can’t spread the infection to other apps or compromise the entire device. This contrasts with systems like Windows, where Malware can often cause system-wide damage.

More Sophisticated Threats

Due to the secure nature of iOS, Malware targeting iPhones is often more sophisticated. Rather than broad, opportunistic attacks, iPhone malware is typically the product of targeted, well-resourced efforts.

These threats often exploit undisclosed vulnerabilities, known as zero days, making them hard to predict and defend against. This differs from malware threats on platforms like Windows and Android, which often exploit known vulnerabilities or deceive users into downloading infected files.

Security Updates And Patches

System Update. reset iphone The concept of updating the system software.

Apple regularly provides security updates to protect against known Malware. These updates are quickly and widely adopted because they’re distributed directly from Apple to all supported devices. This rapid, widespread update process helps limit the longevity of any potential malware threats.

In contrast, updates on platforms like Android can be slower and less uniform due to the variety of manufacturers and carriers involved, which can give Malware a longer window of opportunity.

Identifying Malware On iPhone

Following are the tips to help identify the presence of malicious software on your iPhone:

Unusual Data Usage

One common symptom of a malware infection is a sudden spike in data usage. Malware often sends data, such as personal information or device statistics, to remote servers controlled by cybercriminals. If your iPhone consumes more data than usual, especially when you are not actively using it, it may be a sign of Malware.

Battery Drains Quickly

Malware can be a drain on resources, and that includes your battery. If your iPhone’s battery is rapidly losing charge without you using it heavily, it could indicate that Malware is working in the background.


Just like any computer, your iPhone can overheat if it’s overworked. While it’s normal for your phone to warm up during heavy use or charging, it could be a sign that something’s wrong if it’s boiling while idle or during light use. Malware often uses significant processing power, leading to overheating.

Slow Performance

Are your apps crashing, or is your device lagging or freezing? Malware could be the cause. As it uses up your device’s resources, there may not be enough left for your apps to function correctly, leading to performance issues.

Strange App Behavior

If apps on your iPhone start behaving strangely, such as crashing regularly, displaying unusual messages, or requesting permissions they shouldn’t need, Malware might be to blame. A sudden increase in the number of pop-up advertisements may also indicate adware.

Unfamiliar Apps

One clear sign of a potential malware infection is the presence of apps that you don’t remember downloading. While it’s possible to accidentally download an app, finding several unfamiliar ones could indicate that your device has been compromised.

Changes In Settings

Malware may change your settings to make its operation more effective. For instance, it might turn off updates to prevent their removal or alter your browser settings to redirect you to certain websites.

Inability To Update Or Download Apps

An often overlooked but essential sign of a potential malware infection is encountering issues when updating or downloading apps. Malware might interfere with the App Store to prevent its removal or the installation of protective software, leading to this unusual behaviour.

TAG Solutions can help you protect your iPhone from Malware. From endpoint security solutions to mobile device management, TAG provides all the tools and services needed to keep your systems secure.

Protection Against Malware On iPhone

Have an eye on some protection tips that will help you to stay safe from any malware attack:

  • Regular Software Updates

Constantly update your iPhone to the latest version of iOS. Each update includes security patches that protect your device against known Malware.

  • Avoid Jailbreaking

Jailbreaking your iPhone significantly increases its vulnerability to Malware as it bypasses many of the security protections Apple has in place. While it can be tempting, it’s best to avoid it for your device’s security.

  • Safe Browsing And Downloads

Avoid downloading third-party apps from sources outside the App Store. Also, be cautious of the websites you visit, the links you click, and the files you download.

Use Strong, Unique Passwords

On-Line Banking electronic bank mobile app concept E-Bank mobile app close up.

Strong, unique passwords make accessing your device and account harder for Malware. Consider using a password manager to help you create and store complex passwords.

  • Two-Factor Authentication

Use two-factor authentication wherever possible. This adds an extra layer of security as it requires a second form of verification, such as a text message or fingerprint, and your password.

  • Regular Backups

Regularly backing up your iPhone ensures you don’t lose your data if your device becomes infected. You can use iCloud or iTunes for this.

  • Use Of Security Apps

Consider using reputable security apps to help protect your iPhone. These apps can help identify and remove threats and monitor your device for suspicious activity.

Removing Malware From iPhone

What to do if Malware infects your iPhone? Here are the steps you can take:

Restart Your Device

Sometimes, a simple restart can fix minor issues and even remove some types of Malware.

Update Your Software

Updating your software can often remove Malware because each update includes security patches designed to deal with known threats.

Restore Your Device

If updating your software doesn’t work, you may need to restore your device. This will erase everything on your iPhone and return it to its original factory settings.

Use A Security App

Some security apps can detect Malware, and an antivirus app can remove it. However, be cautious when choosing a security app. Ensure it’s from a reputable source and doesn’t require unnecessary permissions.

Contact Apple Support

woman sitting a computer apple ecosystem iMac and iPhone 5s Simferopol, Russia

If all else fails, contact Apple Support. They can provide expert advice and may be able to help you remove the Malware.

Wrap Up

Malware on iPhones, while less common than on other platforms, can still pose a significant risk. Malware, or malicious software, can find its way into your device through multiple avenues. These include downloading from untrusted sources, clicking on unsafe links, or exploiting vulnerabilities in your system.

Malware can be a significant threat to your iPhone, so it’s essential to stay alert and take steps to protect your device. Regularly update your iOS software, avoid jailbreaking, use strong passwords and two-factor authentication, and back up your data regularly. Be cautious when downloading apps and visiting websites, and consider using security apps.

TAG Solutions can provide comprehensive security solutions for your iPhone. Our experienced professionals can protect your device from malicious software and other threats. Get in touch with us today to find out more!