I haven't read any such accounts, although I constantly hear people saying that Huawei is a shady company. The media campaign has worked, and everyone just knows Huawei to be shady - just nobody is quite sure why. That's why I ask for specific cases, but all I ever get in response are the same two or three minor incidents from a long time ago. This is in contrast to other major tech companies that people generally find respectable (Samsung, Apple, Google, Microsoft), which have engaged in far more serious documented cases of IP theft over their histories.