But cloud services are an increasing part of many online and offline businesses, which may not act so quickly.
Fixes are in the works for Meltdown, and some have already rolled out, only to cause more problems.
Also consider a password manager, which can create passwords for you (but make sure the manager itself is secure). Whether or not these specific flaws are taken advantage of by hackers, future ones certainly will be.
And software fixes for Meltdown may not be perfect: Patches for Meltdown could slow down computers in some cases.
As The Verge explained: The vulnerabilities allow an attacker to compromise the privileged memory of a processor by exploiting the way processes run in parallel.