Since certificates have an expiration date, they have to be renewed regularly.
If your WLAN client requests your consent and displays data of the new certificate, you can compare it with the following to detect fraud attempts.
Server name: radius-eduroam.zih.tu-dresden.de
SHA1 Fingerprint=3E:C3:AB:55:02:3E:05:9D:47:BB:2C:37:7E:85:C7:20:CC:2F:4E:A1
SHA256 Fingerprint=0B:8A:47:85:AD:38:E0:0A:55:C3:FE:EA:D1:94:56:86:BF:F1:17:99:C0:58:B1:84:6E:A4:D1:7F:42:E3:03:A3
MD5 Fingerprint=DA:4B:B8:17:98:86:34:59:D3:F2:23:D7:34:12:AC:6F
Validity
Not Before: Jun 29 00:00:00 2023 GMT
Not After : Jun 28 23:59:59 2024 GMT
From 12.6.2024
SHA1 Fingerprint=62:7C:ED:FB:10:FD:07:DC:D6:F3:7B:3E:6E:B6:9D:65:27:3F:34:3C
SHA256Fingerprint=AE:CC:9A:44:F3:F9:70:C2:72:82:49:42:0B:4D:5A:DC:A0:19:84:84:52:2D:64:B7:6B:AF:56:60:AE:E6:A0:CA
MD5 Fingerprint=AD:30:1B:DB:23:51:85:6F:7F:2E:AF:DC:B6:8D:D7:CD
Validity
Not Before: May 31 00:00:00 2024 GMT
Not After : May 31 23:59:59 2025 GMT