Exhibit 99.1

 BLUE COAT SYSTEMS RECEIVES EXPECTED NASDAQ NOTIFICATION RELATED TO LATE FILING

    SUNNYVALE, Calif., March 20 /PRNewswire-FirstCall/ -- Blue Coat(R) Systems
(Nasdaq: BCSI) today announced that, on March 15, 2007, it received a notice
from the Nasdaq Stock Market, as expected, stating that Blue Coat is not in
compliance with Nasdaq's Marketplace Rule 4310(c)(14) because Blue Coat has not
timely filed its Report on Form 10-Q for the fiscal quarter ended January 31,
2007. Blue Coat previously announced that it has delayed the filing of its Form
10-K for the fiscal year ended April 30, 2006 and its Form 10-Q's for the fiscal
quarters ended July 31, 2006 and October 31, 2006, which also rendered Blue Coat
not in compliance with Rule 4310(c)(14), because a committee of independent
directors has been conducting a review of Blue Coat's historical practices in
granting stock options to members of senior management and employees and
determined that the Company will restate its historical financial statements.
The Company is working diligently to complete the restatement and file all of
its delinquent filings.

    On January 29, 2007, Blue Coat announced that the Nasdaq Stock Market had
notified Blue Coat that the Nasdaq Stock Market will continue the listing of
Blue Coat Common Stock pending a review by the Listing and Hearing Review
Council of the Nasdaq Stock Market (the "Listing Council"). The Listing Council
has called for review the earlier decision of the Nasdaq Listing Qualifications
Panel (the "Panel") requiring Blue Coat to file all required restatements and
delinquent periodic reports by January 29, 2007, and has stayed any suspension
of trading of Blue Coat's securities pending further action by the Listing
Council. Blue Coat may submit additional information to the Listing Council by
March 30, 2007. The Listing Council will then review the Panel's decision on the
written record. There can be no assurance that the Listing Council will
determine that Blue Coat should remain listed on Nasdaq subsequent to March 30,
2007.

    About Blue Coat Systems

    Blue Coat secures Web communications and accelerates business applications
across the distributed enterprise. Blue Coat's family of appliances and
client-based solutions -- deployed in branch offices, Internet gateways, end
points, and data centers -- provide intelligent points of policy-based control
enabling IT organizations to optimize security and accelerate performance
between users and applications. Blue Coat has installed more than 30,000
appliances worldwide and is ranked #1 by IDC in the Secure Content and
Application Delivery market. Blue Coat is headquartered in Sunnyvale,
California, and can be reached at (408) 220-2200 or www.bluecoat.com.

    FORWARD LOOKING STATEMENTS: Statements in this press release about Blue
Coat's listing status on the Nasdaq Stock Market, the possible conclusions or
determinations to be made by the Board of Directors or the independent
committee, and the Company's ability to file reports on Form 10-K and Form 10-Q
are forward-looking statements and are subject to the Safe Harbor provisions
created by the Private Securities Litigation Reform Act of 1995. These
forward-looking statements are based on current information and expectations and
involve a number of risks and uncertainties. Actual results may differ
materially from those projected in such statements due to various factors,
including but not limited to, the final conclusions of the Board of Directors,
the Audit Committee, the independent committee, and the Company's independent
public accountants concerning matters related to the Company's stock option
grants; the inability of the Company to file its Form 10-K and Form 10-Q's on a
timely basis to avoid delisting by Nasdaq; the Company's inability to comply
with requirements imposed by Nasdaq for continued listing; the review and audit
by the Company's independent auditor of the Company's fiscal 2006 financial
statements; the outcome of inquiries initiated by the Securities and Exchange
Commission; as well as other risks more fully described in the "Risk Factors"
section of the Company's quarterly report on Form 10-Q for the quarter ended
January 31, 2006.

    NOTE: All trademarks, trade names or service marks used or mentioned herein
belong to their respective owners.

SOURCE  Blue Coat Systems
    -0-                             03/20/2007
    /CONTACT:  media, Steve Schick, +1-408-220-2076, or
steve.schick@bluecoat.com, or investors, Lily Wu, +1-408-220-2318, or
Lily.wu@bluecoat.com, both of Blue Coat Systems/
    /Web site:  http://www.bluecoat.com/
    (BCSI)