If there are any manual steps involved in patching, endpoints may not have been updated during lockdown. If you are unable to force or automate patching across your devices simply asking your users to manually run updates before they return to the office will help to mitigate risk.
Walking straight through the front door
Attacks, especially phishing attacks, are becoming increasingly sophisticated so it’s highly likely that users will have unwittingly triggered these during the lockdown period. There has been a huge increase in phishing attacks during lockdown especially those masquerading as 0365 and Covid-19 updates. If you haven’t got cloud-based endpoint security solutions in place, we would recommend you stagger the return of your staff to avoid overwhelming your existing security stack.