Spyware - How It Tracks You and How to Remove It

About 2 min read

Spyware is a type of malware that secretly collects information without the user's consent. It gathers various data such as browsing history, search history, keystrokes, screenshots, and location, and sends it to the attacker. It is bundled with free software or installed automatically from malicious websites. In 2024, the number of detections of spyware targeting mobile devices increased by more than 30% year over year.

Where the Clues That Reveal It Remain

Spyware is built to keep running without being noticed. Because of that, it cannot be assumed that it will be found through changes a person can feel, such as a device becoming slow or displaying things incorrectly. At the same time, the information it collects is of no use to the attacker unless it is carried outside the device. Owing to that property, the clues appear not inside the device but on the side of the traffic leaving it, and that is the practical difference from the kinds of malicious programs whose presence becomes known because they interfere with normal operation. Outbound traffic in itself, however, is nothing unusual. Legitimate functions also communicate with the outside on a regular cycle, checking for updates, synchronizing the clock, or synchronizing stored content. The fact that traffic occurred is therefore not enough to judge by; grounds for a judgement exist only where it has been recorded during normal periods which destinations are contacted, at what interval, and in what volume. In an environment with nothing to compare against, the same records yield no material for calling anything abnormal. The route of installation also affects how long detection takes. Where it gets in because the user carried out the installation procedure, nothing remains in the defensive records as a suspicious event at that moment, and there is little to work from afterwards when trying to establish the date. As a result, the period between installation and discovery is better regarded as governed less by the precision of the detection mechanism than by how ordinary traffic is recorded.

The Difference Between Spyware and Adware

Spyware and adware are often confused, but they differ in purpose and behavior. Adware's main purpose is to generate revenue by forcibly displaying ads, and it tracks browsing behavior to target those ads. Spyware, on the other hand, aims to steal highly confidential data such as passwords and credit card information. While adware is merely a nuisance and causes little direct financial harm, spyware records passwords through keylogger functionality and remotely controls cameras and microphones, causing serious privacy violations and financial damage. However, cases where adware also incorporates spyware functions are increasing, blurring the boundary between the two.

Types of Spyware

Keyloggers record keyboard input to steal passwords. Tracking cookies follow browser activity. Advanced spyware can even remotely control cameras and microphones. Pegasus, known as nation-state-level spyware, has the ability to access nearly all data on a smartphone, and cases of it being used to surveil journalists and human rights activists have been reported.

Countermeasures

The basics are to avoid installing untrusted software and to configure your browser's privacy settings appropriately. If you use random passwords generated by a password manager via autofill, you can reduce the risk of password theft by keylogger-type spyware.