MOSCOW and THE HAGUE, Netherlands, June 4, 2012 (GLOBE NEWSWIRE) --
Yandex (Nasdaq:YNDX), the leading internet company in Russia operating
the country's most popular search engine and most visited website,
today announced that it will continue to offer its own customized
version of Mozilla's Firefox from Yandex websites following the release
of Firefox version 14 for the Russian market. The "nightly" test
version is expected to be released tomorrow, followed by the beta
version by the end of the week.

This customized version of the Firefox browser was developed under
Yandex's arrangements with Mozilla and includes Yandex as the default
search service. With the release of the new version of Firefox, Yandex
will remain among the search options available to users of Firefox's
generic browser but will no longer be the default search provider. As
with prior versions of Firefox, users will be able to change the
default search provider if they desire.

Yandex expects that this change of the default search settings in the
generic Firefox browser will have a minimal effect on its share of
searches, and the impact on revenue and profitability will be
negligible.

ABOUT YANDEX

Yandex (Nasdaq:YNDX) is the leading internet company in Russia,
operating the country's most popular search engine and most visited
website. Yandex also operates in Ukraine, Kazakhstan, Belarus and
Turkey. Yandex's mission is to answer any question internet users may
have.

The Yandex Company logo is available at
http://www.globenewswire.com/newsroom/prs/?pkgid=10933

FORWARD-LOOKING STATEMENTS

This press release contains forward-looking statements that involve
risks and uncertainties. These include statements regarding the impact
that the release of Firefox 14 will have on our market share and
budgeted revenues and profitability. Actual results may differ
materially from the results predicted or implied by such statements,
and our reported results should not be considered as an indication of
future performance. The potential risks and uncertainties that could
cause actual results to differ from the results predicted or implied by
such statements include, among others, competitive pressures, changes
in advertising patterns, changes in user preferences, changes in the
legal and regulatory environment, technological developments,
unforeseen changes in our hiring patterns, and our need to expend
capital to accommodate the growth of the business, as well as those
risks and uncertainties included under the captions "Risk Factors" and
"Operating and Financial Review and Prospects" in our Annual Report on
Form 20-F for the year ended December 31, 2011, which is on file with
the Securities and Exchange Commission and is available on our investor
relations website at
http://company.yandex.com/investor_relations/sec_filing.xml and on the
SEC website at www.sec.gov. All information provided in this release is
as of June 4, 2012, and Yandex undertakes no duty to update this
information unless required by law.


CONTACT: Investor Relations
         Dmitry Barsukov, Katya Zhukova
         Phone: +7 495 739-7000
         E-mail: askIR@yandex-team.ru
         
         US Investor Contact
         The Blueshirt Group, for Yandex
         Alex Wellins
         Phone: +1 415 217-5861
         E-mail: alex@blueshirtgroup.com
         
         Media Relations
         Ochir Mandzhikov, Dina Litvinova
         Phone: +7 495 739-7000
         E-mail: pr@yandex-team.ru