A security consulting firm released a report on the safety of password managers. A non-geek, summarized version is also available at the Washington Post. (Summarized graphic of results.)
The password managers included in the study were 1Password 4, 1Password 7, Dashlane, KeePass, LastPass. Unfortunately, the testing was limited to Win10 even if the password managers were available on other platforms. They all had some flaws, but as reported, you should still use one. They were all tested for encryption method on the database, accessibility of the master password and keys in memory while unlocked, and the master password and keys in memory while locked.
All were evaluated to have adequate encryption on the file. 1Password 4 (which actually had better memory security than 1Password 7,) was best at keeping individual passwords safe in memory; while KeePass was best at keeping the Master Password safe in the memory tests (although Dashlane did the same while it while in a locked state.)
(Score: 2, Insightful) by Anonymous Coward on Thursday February 21 2019, @03:47PM
Yes, there is a security issue here.
But, it is also being overblown.
Compared to the "usual user" alternative of
the benefits of using a password manager far outweigh the security issues of #1 and/or #2 above that result from not using a password manager.
Yes, a bad guy might hijack your machine. But the probability of that happening is orders of magnitude lower than the probability of being hacked because of #1 or #2 above.
So using a manager, even with this risk, is a significantly lower risk endeavor than not using one.