Recently, a security article was published about a “backdoor” in the ESP32:
https://nvd.nist.gov/vuln/detail/CVE-2025-27840
Another security researching commented:
Then Espressif responded:
Now that MCUs are connected, security is a concern, so it is good to see it is being taken seriously. It is also interesting how things can be perceived as a problem (especially with media) attention that may not be.