Brake Leak -_-

[Freshagen]

Yesterday my brake pedal began to sag more than usual; able to brake with regular pressure, but if i pressed harder the pedal continued to sink... a couple of hours later my check Brake light came on so i looked and the Brake fluid was at about the minimum level when before it was full, so i refilled it with dot 3 and i looked under the front right wheel to noticed where the leak is coming from. here are some pictures.







Anybody got any ideas on any possible causes or advice on how to fix this?

Any help/advice/knowledge is appreciated. thanks guys/girls.

[Fake Thug]

First you can just tighten that brake line bolt down and check back the next day to see if stops leaking. Or you can remove that bolt and replace the copper washers, reinstall the bolt, tighten it and bleed that caliper.