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Malwarebytes slows SQLite

Malwarebytes slows SQLite

(1) By Simon Slavin (slavin) on 2020-04-19 08:24:46 [source]

Does anyone here understand Malwarebytes ?

In another thread, a user has reported that moving their SQLite database to a drive scanned by Malwarebytes greatly slows operations (from 0.07 seconds to 5 seconds).


I don't know anything about Malwarebytes or why it should do that. I presume it is scanning the database file each time it is changed. Can others reproduce the problem ? Can anyone explain what's going on ? Would the extra time increase with the size of the database file ?

(2) By luuk on 2020-04-19 09:11:13 in reply to 1 [link] [source]

The number of hits, when googling for: "malwarebytes slowing down windows 10" say enough...

some links:

  • https://antivirussupportnumber.org/fix-malwarebytes-slowing-down-windows-10/

  • https://forums.malwarebytes.com/topic/228395-malwarebytes-services-causing-slow-pc/

The best solution, which should only be executed for the first half:

  • remove malwarebytes, reinstall malwarebytes


(3) By Keith Medcalf (kmedcalf) on 2020-04-19 17:42:39 in reply to 1 [link] [source]

This is how all anti-ransomware software works. It does not matter who wrote it, it all works the same way by instituting a default "go slow" on everything which would other do I/O "too fast". (Where the definition of "too fast" varies by each software makers opinion, but is usually IOPD (IO per day) rather than IOPS (IO per second)). Unless you MANUALLY designate the program or directory as "not ransomware".

This is on the theory that:
- most people "live to click"
- the average computer user IQ is on par with their shoe size
- ransomware must do "lots of I/O really fast" be effective
- unlike TCP there is no "evil bit" in the PE header so there is no way to detect evil software
- it is easier to spend mucho dollaro on a fast computer and then even more money on software to make it go slow, than it is to engage the brain

The prevalence of ransomware and of software specifically designed to make everything "go slow" is an indicator of the overall success of these strategies.