PCMag editors select and review products . If you buy through affiliate links, we may earn commissions, which help support our testing.If you’re short on disposable income, you don’t want to waste any of your money on unnecessary stuff. If you’re sitting atop a pile of simoleons, well, you don’t reach that enviable position by spending a lot. Can you justify purchasing for your devices, or should you just rely on built-ins and come-withs? In most cases, you should cough up the cash. Depending on your device’s operating system, adding antivirus protection beyond what’s built in ranges from a...…PCMag editors select and review products . If you buy through affiliate links, we may earn commissions, which help support our testing.If you’re short on disposable income, you don’t want to waste any of your money on unnecessary stuff. If you’re sitting atop a pile of simoleons, well, you don’t reach that enviable position by spending a lot. Can you justify purchasing for your devices, or should you just rely on built-ins and come-withs? In most cases, you should cough up the cash. Depending on your device’s operating system, adding antivirus protection beyond what’s built in ranges from a...WW…