Tools

CyberChef

https://www.nayuki.io/page/automatic-caesar-cipher-breaker-javascript

http://fbcs.bplaced.net/multi_encoder_decoder.html

https://quipqiup.com/ https://mothereff.in/bacon

http://www.spammimic.com/

https://crypto.interactive-maths.com/affine-cipher.html

https://www.dcode.fr/