Privacy Compliance Enforcement, Part I: Weak Application Security Equals Noncompliance
To comply with privacy requirements, a company that processes consumer data must do more than install a firewall and use Secure Sockets Layer encryption, Dave Stampley says. The security side of privacy extends to application code and implementation.
The Federal Trade Commission's recent announcement of a proposed settlement with BJ's Wholesale Club is just the latest privacy-enforcement action to send the message that application security matters--a lot.
The FTC's complaint against BJ's gives new clarity to the line between reasonable and unreasonable security practices. Some of the criticized practices fall in the network-security, access-controls, and incident-response categories: insufficient measures to detect unauthorized access and conduct security investigations, insecure wireless network access, and use of commonly known default user IDs and passwords. But other practices listed in the complaint fall squarely in the category of application controls to protect sensitive information, such as failure to encrypt sensitive information while in transit or in network storage and unduly long data retention.
According to the FTC, "Attacks on Web applications often pass undetected through firewalls and other network defense systems, putting at risk the sensitive information that these applications access. Application vulnerabilities are often neglected, but they are as important to deal with as network issues." (Security Check: Reducing Risks to Your Computer System, FTC Facts for Business PDF, June 2003.)
Web-application security vulnerabilities pose a unique compliance risk for companies. Unlike compliance failures that take place in the background--for example, an unencrypted business-to-business transmission of sensitive consumer data--application weaknesses are open to discovery by any skilled Web surfer and even consumers themselves.
"The FTC appears to be taking a strict liability approach to E-commerce security flaws," says Mary Ellen Callahan, an attorney at Hogan & Hartson in Washington, D.C., who has represented clients facing government privacy compliance investigations. "White-hat hackers and tipsters have prompted a number of enforcement actions by reporting Web-site flaws they discovered."
A Compliance Imperative With A History
The first application-security-enforcement action, which involved Infobeat's E-mail news service, was concluded by New York Attorney General Eliot Spitzer in January 2000. When consumers clicked on ads in Infobeat's HTML E-mails, their E-mail addresses were being transmitted to the advertisers. Also, Infobeat's E-mail messages included recipients' demographic information in the nondisplayed E-mail header.
To date, at least a dozen application-security-enforcement actions have been brought by state attorneys general and the FTC, under its "culture of security" initiative.
For the most part, privacy-enforcement actions have been concluded by settlement with target companies. Unlike laws and regulations, settlement agreements and related court filings such as complaints don't constitute binding law for other companies.
But any company that handles consumer data should seriously heed the lessons found in these actions. In a world where laws require companies to determine what "reasonable" security looks like, and where companies routinely post privacy policies that promise reasonable security, the following cases constitute a critical resource for understanding what compliance and reasonableness look like in the eyes of government agencies:
Eli Lilly And Development Standards
That day, an Eli Lilly programmer executed a program to send a message to all consumers who had registered for an E-mail reminder service on prozac.com. Instead of sending an individual message to each registrant or a mass blind carbon-copy message to all 669 registrants, the program populated the "To" field of the message with all registrants' E-mail addresses.
Eli Lilly entered into a settlement agreement with the FTC that imposed terms similar to the FTC's Safeguards Rule for financial institutions--including requirements for Eli Lilly to designate a security program coordinator and address "reasonably foreseeable internal and external risks to the security, confidentiality, and integrity of personal information."
It's the FTC's complaint against Eli Lilly, however, that offers the most insight into what the FTC considers noncompliance. The FTC alleged that Eli Lilly failed to:
Provide appropriate training for its employees regarding consumer privacy and information security
Provide appropriate oversight and assistance for the employee who sent out the E-mail, who had no prior experience in creating, testing, or implementing the computer program used
Implement appropriate checks and controls on the process, such as reviewing the computer program with experienced personnel and pre-testing the program internally before sending out the E-mail
Eli Lilly also entered into a similar settlement agreement with eight state attorneys general. The multistate settlement required Eli Lilly to implement "automated barriers in its databases to ensure that only those applications that have been tested and pre-authorized by designated personnel, and that are being executed by designated personnel, can gain access to personally identifiable information."
In an age of rapid application deployment, the two Eli Lilly enforcement actions send the message that application-security compliance includes development training, code review, testing, and production deployment controls.
Microsoft Passport And Deployment Standards
In August 2002, the FTC entered into a settlement agreement with Microsoft relating to the Microsoft Passport Web service. Without going into detail, the FTC's complaint alleged that Microsoft "failed to implement and document procedures that were reasonable and appropriate to: (1) prevent possible unauthorized access to the Passport system; (2) detect possible unauthorized access to the Passport system; (3) monitor the Passport system for potential vulnerabilities; and (4) record and retain system information sufficient to perform security audits and investigations."
As with Eli Lilly, the settlement agreement itself doesn't contain specific remedies corresponding to the FTC's allegations and doesn't validate the accuracy of the allegations in the complaint. Nonetheless, the allegations themselves provide valuable insight into the FTC's sense of reasonable security practices--including the need to document, monitor, and maintain records of unauthorized application activity.
ACLU And Vendor Security
Not long after news of the Eli Lilly prozac.com data spill first became public, the American Civil Liberties Union filed a petition with the FTC urging investigation and remedial action. Ironically, a few months later, the ACLU's own Web-application-security failure caused a privacy exposure that led to a settlement with New York Attorney General Spitzer.
The lesson of the ACLU case, among others, is that a company that licenses vendor software or relies on outsourced service providers to process consumer data should consider itself under an obligation to validate the application security of the third party's code--especially if the company has encouraged consumers to trust its security practices.
Know The Code--Other Application Security Cases
Petco: Last November, the FTC said it had reached a settlement with Petco based on two allegations of conduct that contradicted its privacy promises. First, the FTC found that Petco failed to protect its Web site from commonly known vulnerabilities such as SQL injection attack. Second, Petco compounded the impact of the vulnerability by failing to encrypt consumer data stored on its Web site.
Barnes & Noble: In May 2004, Attorney General Spitzer reached a settlement with Barnes & Noble. Because some users choose to set their Web browsers to reject cookies, Barnes & Noble tracked user activity on its Web site by storing user information in the URL, creating a vulnerability to "session jacking."
Links to documents regarding these and other cases are listed in the table of application security enforcement actions at the end of this article.
Locking Down The Application
In light of the risks posed by buffer overflows, inadequate coding standards, weak access controls, lack of encryption, and many other implementation challenges, any company that processes consumer data in its Web-facing applications will be expected to have guarded against those vulnerabilities.
Many application-security vulnerabilities have been well documented. IT development organizations looking for resources may wish to consult Writing Secure Code by Michael Howard and David LeBlanc, and other publications in the resource list at the end of this article.
Privacy Enforcement Actions Related
To Application Security
Privacy: What Developers and IT Professionals Should Know
Security Engineering: A Guide to Building Dependable Distributed Systems
Ross J. Anderson
Writing Secure Code, 2nd Ed.
Dave Stampley, certified information systems security professional, is general counsel and compliance specialist at Neohapsis Inc., a Chicago-based consultancy providing independent information security, forensic, and IT product-testing services. He has served as corporate counsel and director of privacy for a technology provider, as an assistant attorney general under New York Attorney General Eliot Spitzer, and as a criminal prosecutor in the Manhattan district attorney's office. Send him E-mail at firstname.lastname@example.org.
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