Antivirus software is a cybersecurity program designed to prevent, look for, detect, and remove viruses and other malware (malicious software) from your devices. Its primary purpose is to protect your computer, phone, or tablet from cyberthreats that can damage systems or steal personal information. But that’s just the basic definition, so let’s explore how antivirus software actually works.
What should antivirus software have?
When people think of an antivirus, they often picture a program that just deletes a bad file after a computer gets infected. However, modern cybersecurity requires much more than that. To offer true, comprehensive protection against complex digital threats, the antivirus needs to be versatile. So, if you are looking to secure your devices, here are the key antivirus features your software should have:
- Real-time protection. This is the core of what modern computer protection software does. The app should silently scan files you’re downloading, websites you’re visiting, and apps you’re opening in the background to catch threats before they execute;
- On-demand scanning. While real-time protection is fantastic, you also need manual control over your system’s health. You should be able to run manual on-demand and scheduled scans to comb through your entire computer. These help you uncover hidden, inactive infected files that might be lying dormant, waiting for a specific trigger to attack your system;
- Threat quarantine. When malware is found, the software must be able to quarantine it — isolating the infected file in a secure, hidden folder where it is completely cut off from your system, ensuring it cannot cause harm while you decide what to do with it;
- Automatic updates. Antivirus programs are only as good as their threat databases. Hackers release thousands of new viruses every single day. Because of this, your antivirus software must automatically download frequent updates to recognize the newest cyberthreats on the market. Without these constant updates, your virus protection becomes outdated very quickly.
What are the types of antivirus protection?
The different types of antivirus software rely on specific detection methods, including signature-based, heuristic, behavior-based, and machine learning detection. Modern antivirus solutions usually combine all of these to keep your devices safe.
Here is a breakdown of the main types of antivirus protection and their specific use cases:
- Malware signature detection. Also known as malware signature antivirus, this method checks a suspect file’s code against a massive database of known computer viruses.
- Use-case: Quickly identifying and blocking older, well-known computer viruses.
- Heuristic detection. Instead of looking for an exact match, this method analyzes files for suspicious code structures that look or act like malicious code.
- Use-case: Catching newly created or modified malware that isn’t in the database yet.
- Behavior analysis. Sometimes called system monitoring antivirus, this method watches how a program actually behaves, e.g., trying to delete lots of files or secretly accessing your camera.
- Use-case: Stopping active, sneaky threats that managed to slip past the initial code scans.
- Machine learning detection. Also referred to as machine learning antivirus, it uses cloud-based AI to observe threat patterns across millions of devices, instantly learning what new suspicious files look like.
- Use-case: Providing real-time, highly adaptive defense against zero-day attacks and brand-new hacking tactics.
However, searching for an app based on just one of these types is unnecessary, as any reliable software will combine them all to provide complete antivirus protection.
What antivirus should I use?
The obvious answer for whoever is reading this blog is Surfshark Antivirus! You didn’t think I’d promote someone else, right?
On a more serious note, here is how you should choose the right antivirus cybersecurity for your needs:
- Read independent reviews: trustworthy websites constantly review and test software to see which apps actually deliver on their promises;
- Look for real-time shields: a good antivirus is always on and always watching for threats;
- Weigh free vs. paid options: while legitimate free versions exist, paid apps usually offer necessary features like scheduled scans and cloud-based protection. If you are on the fence, it’s worth learning about the differences between free vs. paid antivirus;
- Don’t fall for scare tactics: if you’re browsing the web and see a flashing banner warning you that you have a virus, that is a scam. Never click on it.
With this knowledge at hand, you’re ready to get the antivirus app that will keep you safe.
In conclusion: antivirus is a necessity
At the end of the day, having antivirus software on your devices is an absolute necessity. Hackers are constantly inventing new ways to profit off of unprotected users, which means you cannot afford to abandon your cyber defenses. Equip yourself with the right tools, secure your digital life, and enjoy the internet with peace of mind.
FAQ
How does an antivirus work?
Antivirus software works by actively scanning your files, installed programs, and system activities, comparing them against a massive database of virus signatures. If it spots known malware, it blocks it immediately. It also uses advanced heuristics and behavior analysis to detect brand-new viruses, preventing malicious code from executing on your computer systems or mobile devices.
How often should I scan with an antivirus?
You should run a quick antivirus scan daily and a deep, full-system scan at least once a week to ensure your device remains completely malware-free.
What are examples of antivirus software?
Surfshark Antivirus is an excellent example of a modern antivirus, offering real-time shields, cloud-based threat detection, and comprehensive device protection.
Do I need an antivirus for my phone?
Yes, you absolutely need an antivirus for your phone. Smartphones are essentially pocket-sized computers and are highly susceptible to data theft and malware. If you are unsure about your mobile vulnerabilities, read more about why you need an antivirus.
