I'm seeing a lot of reports from users of Huawei and Honor devices have reported that their phones are incorrectly identifying Google apps as Trojan malware, specifically labeled as TrojanSMS-PA. According to the alert, this "malicious software" has the ability to send SMS messages without user consent.
On user forums (Reddit, Google Support, and numerous others), multiple accounts support that this is not an isolated incident. The issue seems to have appeared after the latest Google app update and is primarily identified by Huawei's own Phone Manager or Optimizer app.
Other antivirus apps like Norton and Sophos did not identify the Google app as malicious, which leads to the strong assumption that this is a false positive. While no official statement has been given by Huawei at the time of writing, the general consensus is that this is a bug in Huawei and Honor's security software, rather than a genuine security threat from Google.
One of the most probable reasons behind Huawei's false security warnings could be a software glitch. It's not uncommon for bugs to interfere with security algorithms, leading to inaccurate notifications. Another angle to consider is the role of false signatures. Security software hinges on virus definitions, and an outdated or flawed signature could be the culprit behind the incorrect identification.
It's worth noting that this virus alert was first reported almost two days ago (early October 27), so it is strange that it wasn't immediately addressed by either parties as so many people are having issues with it.