[13][14] In 2021 The New York Times stated that unknown parties might have embedded malware in JetBrains' TeamCity CI/CD software that led to the SolarWinds hack and other widespread security compromises.

[15] In a press release, JetBrains said they had not been contacted by any government or security agency and had not "taken part or been involved in this attack in any way".

[16] The CEO of one of the affected companies, SolarWinds, "asked about the possibility that software tools made by JetBrains, which speeds the development and testing of code, was the pathway, Mr. Ramakrishna said there was still no evidence".

Kotlin is an open-source, statically typed programming language that runs on the Java Virtual Machine and also compiles to JavaScript or native code (via LLVM).

The New York Times reported that TeamCity may have been used by Russian hackers of US governmental and private agencies, in potentially "the biggest breach of United States networks in history".

[41] YouTrack is a proprietary, commercial web-based bug tracker, issue tracking system, and project management software developed by JetBrains.

[42] It was publicly launched in July 2023 and can be used with IDEs in JetBrains's ecosystem, has CI/CD pipeline integration, while supporting code analysis in over 60 programming languages.

[43] Datalore is a web application for data analysis and visualization, which is focused specifically on the machine learning environment in Python.

In 2009, JetBrains open-sourced the core functionality of IntelliJ IDEA by offering the free Community Edition.