Update README.md

Author: mthcht

README.md

@@ -38,6 +38,7 @@
 - 🚪 Suspicious destination port: [suspicious_ports_list.csv](https://github.com/mthcht/awesome-lists/blob/main/Lists/suspicious_ports_list.csv)
 - 🛡️ Suspicious Firewall rules: [suspicious_windows_firewall_rules_list.csv](https://github.com/mthcht/awesome-lists/blob/main/Lists/suspicious_windows_firewall_rules_list.csv)
 - 🆔 Suspicious User-agent: [suspicious_http_user_agents_list.csv](https://github.com/mthcht/awesome-lists/blob/main/Lists/suspicious_http_user_agents_list.csv)
+- 🔏 Suspicious CERTs signer: [\[suspicious CERTS\]](https://github.com/mthcht/awesome-lists/tree/main/Lists/CERTS)
 - 📇 Suspicious USB Ids: [suspicious_usb_ids_list.csv](https://github.com/mthcht/awesome-lists/blob/main/Lists/suspicious_usb_ids_list.csv)
 - 🏷️ Suspicious mutex names: [suspicious_mutex_names_list.csv](https://github.com/mthcht/awesome-lists/blob/main/Lists/suspicious_mutex_names_list.csv)
 - 🔢 Suspicious MAC address: [suspicious_mac_address_list.csv](https://github.com/mthcht/awesome-lists/blob/main/Lists/suspicious_mac_address_list.csv)