Porn producer Malibu Media, which has filed more than 4,000 copyright lawsuits since 2009 — several times more than any other company — is currently trying to compel Verizon to reveal the identities of Internet users Malibu believes are illegally sharing its movies. But lawyers for the telecom titan are telling the court they’ve had enough of Malibu’s “defective” and “unenforceable” subpoenas. [More]