Malwarebytes responded one day before disclosure in a blog article detailing the extreme difficulty in executing these attacks, as well as revealing that the announced server-side and encryption issues were resolved within days of private disclosure and were not outstanding at the time Project Zero published their research. On February 2, 2016, Project Zero announced four vulnerabilities in the Malwarebytes flagship product, including lack of server-side encryption for update files and lack of proper payload signing within encrypted data the combination of which allowed an attacker to recompile the encrypted payload with exploits. Malwarebytes has listed a solution for eliminating this threat. Vonteera is adware that uses stolen certificates and disables anti-malware and virus protection, such as from Malwarebytes. IObit said that as of version 1.3, their database has been updated to address those accusations of intellectual property theft made earlier by Malwarebytes.

Malwarebytes claims to have served DMCA infringement notices against CNET, and Majorgeeks in order to have the download sites remove the IObit software. After the declaration from IObit, Malwarebytes replied that they are not convinced of the argument from IObit. IObit also stated that Malwarebytes did not have convincing proof, and declared that the databases were not stolen. They said that they did not have time to filter out the signature names that are similar to Malwarebytes.

IObit denied the accusation and stated that the database is based on user submissions, and sometimes the same signature names that are in Malwarebytes get placed into the results. On November 2, 2009, Malwarebytes accused IObit, a Chinese company that offers similar products, of incorporating the database of Malwarebytes Anti-Malware (and several products from other vendors, which were not named) into its security software IObit Security 360. ( December 2020) ( Learn how and when to remove this template message) Unsourced material may be challenged and removed. Please help improve this section by adding citations to reliable sources. However, the free version got 4.5 stars out of 5 and an Editor's Choice award for free removal-only antivirus software in 2013-4.

PC Magazine gave Malwarebytes Anti-Malware 3.5 stars out of 5 in May 2010, saying that although it was good at removing malware and scareware, it fell short on removing keyloggers and rootkits.

Mark Gibbs of Network World gave Malwarebytes Anti-Malware 4 stars out of 5 in January 2009 and wrote that 'It does the job and only the lack of a detailed explanation of what it has found stops it from getting 5 out of 5'.

CNET in 2008 cited Malwarebytes as being useful against the MS Antivirus malware and also awarded it an April 2009 Editor's Choice, along with 25 other computer applications.

PC World 's Preston Gralla wrote that 'Using Malwarebytes Anti-Malware is simplicity itself'.

This includes protection against malware, ransomware, exploit, and malicious websites. released version 3.0 to the general public. The free version can be run manually by the user when desired, whereas the paid version can perform scheduled scans, automatically scan files when opened, block IP addresses of malicious web sites, and scan only those services, programs and device drivers that are currently in use. Malwarebytes is available in both a free and a premium paid version. Malwarebytes scans in batch mode, rather than scanning all files opened, reducing interference if another on-demand anti-malware software is also running on the computer. Malwarebytes is primarily a scanner that scans and removes malicious software, including rogue security software, adware, and spyware.

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