Can't reduce the risk completely, but the best process is to introduce anti virus software, and engage an organisation to do penetration testing to document vulnerable areas and come up with a mitigation plan. The most common cause of cyber security issues though is through phishing and staff receiving emails, texts etc which have links that expose the organisation from beyond the company or government firewall. The best way to protect this is with staff training. You should also install relevant patches, but most cloud providers will install patching for you.
