Every Windows client here is being repeatedly hammered by malware. One client was hijacked in November by Cryptolocker, reformatted and reinstalled, and then reinfected by Smart Guard Protection and a zoo of associated rootkits, trojans, backdoors, and you name it. With the assistance of the anti-malware experts the latest threats are being removed, but the malware scanners are having a difficult time detecting all of the threats. just when one set of malware scanners report no malware objects detected, another scanner detects more trojans. So even the experts are having difficulties combatting these threats.
That is true.