Factory reset of OpenWrt router, are my sensitive config files really not recoverable after command "firstboot"?

I would like to give away an old OpenWrt router. I have done the following.
firstboot -y && reboot
/dev/ubi0_1 is mounted as /overlay, only erasing files
Connection to 192.168.55.12 closed by remote host.

Is this really safe, can … Continue reading Factory reset of OpenWrt router, are my sensitive config files really not recoverable after command "firstboot"?

Flashing Booby-Trapped Cisco AP With OpenWRT, The Hard Way

The Meraki AP PCB on a desk, case-less, with three USB-UARTs connected to its pins - one for interacting with the device, and two for monitoring both of the UART data lines.

Certain manufacturers seriously dislike open-source firmware for their devices, and this particular hack deals with quite extreme anti-hobbyist measures. The Meraki MR33, made by Cisco, is a nice access point …read more Continue reading Flashing Booby-Trapped Cisco AP With OpenWRT, The Hard Way

This Week in Security: uClibc and DNS Poisoning, Encryption is Hard, and the Goat

DNS spoofing/poisoning is the attack discovered by [Dan Kaminski] back in 2008 that simply refuses to go away. This week a vulnerability was announced in the uClibc and uClibc-ng standard …read more Continue reading This Week in Security: uClibc and DNS Poisoning, Encryption is Hard, and the Goat