"I have found it out from you."

Translation: L'ho saputo da te.

[dnovinc]

Could these work:

• Lo sono venuto a sapere da te.
• L'ho scoperto da te.

[silkwarrior]

"te" here is what is sometimes called a personal tonic pronoun or disjunctive/stressed pronouns is it?

[kayamel]

Scoperto was refused :( (13/05/2014)

[Viaggiatore]

I think so.