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                                 June 13, 1996



Infoseek Corporation
2620 Augustine Drive, Suite 250
Santa Clara, California  95054


                  Re:      Registration Statement for Offering of
                           an aggregate of 5,812,500 Shares of Common Stock

Ladies and Gentlemen:

                  We refer to your registration on Form S-8 (the "Registration
Statement") under the Securities Act of 1933, as amended, of (i) 5,625,000
shares of Common Stock under the Infoseek Corporation (the "Company") 1996 Stock
Option/Stock Issuance Plan and (ii) 187,500 shares of Common Stock under the
Company's Employee Stock Purchase Plan. We advise you that, in our opinion, when
such shares have been issued and sold pursuant to the applicable provisions of
the 1996 Stock Option/Stock Issuance Plan and the Employee Stock Purchase Plan
and in accordance with the Registration Statement, such shares will be duly
authorized, validly issued, fully paid and non-assessable shares of the
Company's Common Stock.

                  We hereby consent to the filing of this opinion as an exhibit
to the Registration Statement.

                                            Very truly yours,


                                            /s/ Brobeck, Phleger & Harrison LLP

                                            BROBECK, PHLEGER & HARRISON LLP