If you're running remote access software, you're vulnerable to as-of-yet undetectable malware. Instead of trying to convince you to download the malware, hackers have started brute-forcing their way into business computers by cracking login information.
After they've uncovered your remote access information, the hackers will install a program called "Backoff," a tool meant to steal credit-card information from popular Point of Sale systems. The Department of Homeland Security and the Secret Service explained the danger of Backoff in this joint statement:
At the time of discovery and analysis, the malware variants had low to zero percent anti-virus detection rates, which means that fully updated anti-virus engines on fully patched computers could not identify the malware as malicious.
This means that any business could be vulnerable to this kind of attack. Until security companies find a way to patch the hole, the only way to stay safe is to understand how to stop hackers from "brute forcing" your remote access login information.