You know how every year the medical community campaigns for everyone to get a flu shot? That’s because flu outbreaks typically have a season—a time of year when they start spreading and infecting people.

In contrast, there are no predictable seasonal infections for PCs, smartphones, tablets, and enterprise networks. For them, it’s always flu season. But instead of suffering chills and body aches, users can fall ill from a kind of machine malady—malware.Each type of malware infection has its own methods of attack—from stealthy and sneaky to subtle like a sledgehammer.So let's discuss about what is malware? Malware, or “malicious software,” is an umbrella term that describes any malicious program or code that is harmful to systems.

Hostile, intrusive, and intentionally nasty, malware seeks to invade, damage, or disable computers, computer systems, networks, tablets, and mobile devices, often by taking partial control over a device’s operations. Like the human flu, it interferes with normal functioning.

Now the thing is how we can know we have malware in our pc :-

- Your computer slows down. One of malware’s side effects is to reduce the speed of  operating system (OS), whether you’re navigating the Internet or just using your local applications, usage of your system’s resources appears abnormally high. You might even notice your computer’s fan whirring away at full speed. 

- Your screen is inundated with annoying ads. Unexpected pop-up ads are a typical sign of a malware infection. They’re especially associated with a form of malware known as adware. 

- Your system crashes. This can come as a freeze or a BSOD (Blue Screen of Death), the latter occurs on Windows systems after encountering a fatal error. 

- You notice a mysterious loss of disk space. This could be due to a bloated malware squatter, hiding in your hard drive aka bundleware. 

- Your antivirus product stops working and you cannot turn it back on, leaving you unprotected against the sneaky malware that disabled it.

So always check your laptop and pc and keep it away from malware..