What is spyware and how to protect yourself against it?

Did you know that every 39 seconds, at least one system is compromised in the world? It could go through malicious virus, Phishing, social engineering, fileless malwareetc So, we’re here to talk about one of these common tactics: Spyware.

What is spyware And how does it work? You will find the answers below as well as the different types and ways to detect, remove and prevent Spyware..

But before starting: What is malware? Well, it is a malicious software or corrupted program used to break into a system, steal and intercept sensitive data and commit other cyber crimes. Generally, the goal is to make money or ruin an organization’s image.

What is spyware?

Let’s start with the spyware definition. Spyware is a type of malware installed on your device without your knowledge and consent. It secretly collects, monitors, exports and sometimes modifies crucial information.

The data involved includes everything from browser history and banking login information to emails, messages, credit card information and other account credentials. Some spyware can even access and record data from your webcam, microphone, keyboard, etc.

Often professional Spyware attackers sell data such as financial details, login credentials and source coding to third parties.

Whereas Spyware usually describes illegal malware, some types of legal “spyware-like” programs also exist, such as:

  • Tracking cookies for targeted advertising with user consent
  • parental control software
  • Website cookies to personalize your experience
  • Enterprise monitoring tools to control access to data

Of course, these legal tracking tools are a far cry from the malware used by cybercriminals to steal and exploit your personal data.

The term Spyware was first used in October 1995 in an article about Microsoft’s business model. It was published by Usenet, an online platform with newsgroups for discussion on the Internet.

Then in 1999, Steve Gibson of Gibson Research spotted a adware secretly export confidential details from his device. It was after this incident that he programmed the very first anti-spyware, OptOut.

How does spyware work?

Spyware works by secretly tracking cookies to map your internet activities, including email communications, social media actions, and everything you do online. It can also capture other actions with system monitoring tools.

Spyware can enter a system through many vectors, but most commonly through suspicious emails that contain malicious links or attachments. Spyware can also enter your computer through files downloaded from unsecured sources, attach itself (or hide) to legitimate-looking programs, unwanted downloads, and unsecured Internet connections.


Once an attacker lets go Spywareit generally takes place according to the following steps:

  • Infiltrate your computer or system after visiting a compromised website, opening a link or attachment containing spyware, or inadvertently downloading malicious software.
  • Monitor and Capture web and system activity to collect data using keylogging, screen capture, internet tracking etc.
  • Transfer stolen information to the hacker for malicious personal use or for selling to unsafe third parties.

What does spyware collect?

It generally collects the following data:

  • Browser history
  • Keyboard strokes
  • Email accounts and addresses
  • Passwords and usernames
  • Other sensitive information such as bank details, source codes, customer databases, etc.

What problems does spyware cause?

Spyware can cause a host of very serious problems, including:

  • Identity theft
  • Data Breaches
  • Software and system damage
  • Disturbed browsing experience including harmful pop-up ads and changed settings

Example of spyware

First spotted in December 2020, FluBot is a spyware installed by SMS. The post tricked Android users into clicking a fraudulent link to “track a package” or “listen to a voicemail.” In fact, it asked for accessibility permissions which allowed hackers to get confidential details including secure login details and cryptocurrency account information.

FluBot has compromised numerous devices across countries, including major attacks in Spain and Finland. Fortunately, it was dismantled in May 2022 thanks to the joint efforts of 11 countries.

What are the types of spyware?

Spyware can be broken down into various threat factors. Here is a roundup of four types of spyware.


A Trojan is a bogus program that pretends to be a genuine one. It often gives backdoor access to hackers to secretly collect and exfiltrate sensitive data. It is named after the Trojan horse from Greek mythology that was used during war to enter the city of Troy in disguise.


Adware monitors your browser history and downloads to predict which products and services appeal to you. It then displays frustrating pop-up ads while you browse the internet. Malicious adware can cause severe damage to your system and even collect your private data.

Internet trackers

Internet trackers are a common way of tracking your web activities, primarily for sales and marketing purposes. However, sometimes bad actors use them to inject spyware.

They can also track using cookies, but not all of them are malicious. Usually, trustworthy websites use cookies to personalize your browsing experience. But third-party cookies are primarily a type of spyware because they come from an illegitimate source.

System Monitors

System monitors are software or tools that capture all activities performed on your computer, such as browsing, entering passwords, maintaining databases, exchanging emails, etc.

How to spot spyware?

Malicious actors target PCs, Macs, iOS and Android devices to inject different types of malware, including spyware. Basically, any device with an active internet connection can be compromised. That’s why you need to know and educate your employees on the spyware detection signs shared below.

  • the biggest spyware detection sign is that your device is running out of hard drive space without an explanation.
  • Slowness or frequent system crashes
  • Frequent error messages.
  • Redirects to fake websites which might look like genuine sites.
  • Changing browser settings, such as homepage preferences and preferred search engine.
  • Search for unknown software or files.
  • Missing or altered documents.
  • Your browser contains plugins that you have not added.

How to prevent spyware?

Hackers are becoming more sophisticated and organized to attempt different types of cyber attacks. However, you can prevent malware attacks by arming yourself and your employees with the right knowledge So go on and discover the six spyware protection technique below.

Do not install free and unreliable software

There are hundreds of free programs and tools that most people download without checking their authenticity. Many of them have different types of spyware integrated into them. Only buy genuine software from an official platform to stay safe.

Use anti-spyware

Antispyware software helps spyware detection, prevention and removal by performing routine checks on your computer. However, beware of fraudulent anti-spyware programs that may contain computer wormsvirus, hybrid malwareetc Use only trusted programs.

Adjust browser security settings

Browsers themselves have a range of security settings that offer you spyware protection. You can:

  • Disable Suspicious Extensions
  • Disable saved passwords
  • Disable autofill
  • Manage cookies
  • Clear your cache

Browse smart

Developing the habit of smart browsing can mitigate spyware, malicious advertising, password attacks, etc. Do not click on suspicious links or download them, even if they are emailed to you by someone you know. Also, never fall for pop-up advertising baits like sponsored holidays, free and expensive giveaways, sweepstakes, etc.

Use a firewall

A firewall blocks the entry and exit of unauthorized users, making it difficult Spyware enter a system. It works by scanning data packets for malicious code that has already been used for an attack.

Train your employees

Awareness is a must. So, educate your employees on all of the preventative measures above. Most cyberattacks are the aftermath of a lack of cyberawareness.

How to remove spyware?

Spyware is a widespread problem for internet users. Disconnect from the Internet immediately to stop further damage if you suspect it. Then, use verified anti-spyware programs to perform a full system scan to automatically quarantine and remove spyware. If you know the exact location of the Spywareopt for a personalized analysis.

You can remove it manually after identifying the infected program by uninstalling and permanently deleting it.

Final Thoughts

Hackers use tactics to install Spyware on your device without your knowledge and permission. It secretly collects and exports crucial data including financial details. You should be alarmed if you notice slow system performance, unrecognized files, your browser redirecting you frequently, or changed settings.

Installing antispyware software, using a firewall, and adjusting browser settings can help spyware protection and prevention.

What is spyware and how to protect yourself against it? appeared first on EasyDMARC.

*** This is a syndicated blog from EasyDMARC’s Security Bloggers Network written by Knarik Petrosyan. Read the original post at: https://easydmarc.com/blog/what-is-spyware-and-how-to-protect-against-it/

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