https://cemalkor.com.tr/en/ Posts on embedded systems, smart meters and lessons learned in the field. en https://cemalkor.com.tr/blog/sektorler-acikti/en/ https://cemalkor.com.tr/blog/sektorler-acikti/en/ Sat, 22 Aug 2026 00:00:00 +0000 The hole we went to close was ours; the one I found on the way back was someone else's. 1,880 devices in three days, a job started without reading the paperwork, and a hotel key card I tapped with my phone out of curiosity on checkout morning. NFC Security Field https://cemalkor.com.tr/blog/fuota-kurtarma-operasyonu/en/ https://cemalkor.com.tr/blog/fuota-kurtarma-operasyonu/en/ Sat, 08 Aug 2026 00:00:00 +0000 A security hole we spotted over a coffee break, 1,900 already-shipped devices and a pile of unopened boxes. How the code I liked least ended up saving me, two computers with two different BLE personalities, and 160 devices in one afternoon. FUOTA BLE Field https://cemalkor.com.tr/blog/merhaba-dunya/en/ https://cemalkor.com.tr/blog/merhaba-dunya/en/ Fri, 10 Jul 2026 00:00:00 +0000 The opening post of a blog about embedded systems, smart meters and lessons learned in the field. General