Bug summary
Was setting up a new venv per usual.
Installing the latest matplotlib (3.11.0) was flagged as a security threat with Trend Apex One Security Agent.
Returned security threat: Tojran.Win64.ULISE.TL0101FD26ZM
On files: matplotlib-3.11.0-cp314-cp314-win_amd64.whl (matplotlib\ft2font.cp314-win_amd64.pyd) 6dd9a2681287b7c2d9787ac437569ba3a8b73a436adc1b7ea15ab24a.body (matplotlib\ft2font.cp314-win_amd64.pyd)
Unsure why it is flagged, but installing v3.10.9 did not get flagged.
Aplogies if not proper way to coomunicate the bug.
Apologies that I do not have suggestions for a fix.
Apologies if issues are on my end, rather than with Matplotlib (I assume it is not a Matplotlib issue, of course).
Code for reproduction
pip install matplotlib==v3.11.0
Actual outcome
ERROR: Could not install packages due to an OSError: [Errno 2] No such file or directory
Because the file was removed due to being flagged as Trojan.
Expected outcome
Successfully installed matplotlib-3.11.0
Additional information
Trend Micro Apex One Security Agent version: 14.0.20731,
Last update: 15-06-2026
Operating system
Windows 11
Matplotlib Version
3.11.0
Matplotlib Backend
No response
Python version
No response
Jupyter version
No response
Installation
pip
Bug summary
Was setting up a new venv per usual.
Installing the latest matplotlib (3.11.0) was flagged as a security threat with Trend Apex One Security Agent.
Returned security threat: Tojran.Win64.ULISE.TL0101FD26ZM
On files: matplotlib-3.11.0-cp314-cp314-win_amd64.whl (matplotlib\ft2font.cp314-win_amd64.pyd) 6dd9a2681287b7c2d9787ac437569ba3a8b73a436adc1b7ea15ab24a.body (matplotlib\ft2font.cp314-win_amd64.pyd)
Unsure why it is flagged, but installing v3.10.9 did not get flagged.
Aplogies if not proper way to coomunicate the bug.
Apologies that I do not have suggestions for a fix.
Apologies if issues are on my end, rather than with Matplotlib (I assume it is not a Matplotlib issue, of course).
Code for reproduction
Actual outcome
ERROR: Could not install packages due to an OSError: [Errno 2] No such file or directory
Because the file was removed due to being flagged as Trojan.
Expected outcome
Successfully installed matplotlib-3.11.0
Additional information
Trend Micro Apex One Security Agent version: 14.0.20731,
Last update: 15-06-2026
Operating system
Windows 11
Matplotlib Version
3.11.0
Matplotlib Backend
No response
Python version
No response
Jupyter version
No response
Installation
pip