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Expectation of Privacy

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The following discussion of expectation of privacy on work place computer networks is taken from US v. Ziegler, No. 05-30177 (9th Cir. Aug. 8, 2006)

As we know, the Fourth Amendment protects people, not places. [Katz at 351]. Although it is often true that “for most people, their computers are their most private spaces,” the validity of that expectation depends entirely on its context. [Gourde at 1077] [cf. Ortega at 715].

In that vein, a criminal defendant may invoke the protections of the Fourth Amendment only if he can show that he had a legitimate expectation of privacy in the place searched or the item seized. [Maryland at 740] This expectation is established where the claimant can show: (1) a subjective expectation of privacy; and (2) an objectively reasonable expectation of privacy. [Shryock at 978] It is the defendant's burden to prove both elements [Caymen at 1199].

Privacy in the Workplace

The threshold question then is whether the defendant had a legitimate expectation of privacy in his workplace computer and the files stored therein. The defendant's expectation of privacy in his workplace computer must also have been objectively reasonable.

Internet Use Policies

In United States v. Simons, the case upon which the district court relied, the Fourth Circuit reasoned that an employer’s Internet-usage policy—which required that employees use the Internet only for official business and informed employees that the employer would “conduct electronic audits to ensure compliance,” including the use of a firewall— defeated any expectation of privacy in “the record or fruits of
[one’s] Internet use.” 206 F.3d at 395, 398.

Other courts have scrutinized searches of workplace computers in both the public and private context, and they have consistently held that an employer’s policy of routine monitoring is among the factors that may preclude an objectively reasonable expectation of privacy. [Biby at 850] [Thorn at 683] [Avengine at 1133] [Muick at 743] [Wasson at 905] [Compare Long (expectation of privacy in email found)].

To warrant Fourth Amendment protection, an expectation of privacy must “be one that society is prepared to recognize as ‘reasonable.’ ” [Katz at 361]. Accordingly, we note that at least one court has examined the reasonableness of an expectation of privacy in a workplace computer from the standpoint of “community norms.” In TBG Ins. Services Corp. v. Superior Court, 117 Cal. Rptr. 2d 155, 96 Cal. App. 4th 443 (Cal. Ct. App. 2002), the California Court of Appeal stated:

We are concerned in this case with the “community norm” within 21st Century computer-dependent businesses. In 2001, the 700,000 member American Management Association (AMA) reported that more than three-quarters of this country’s major firms monitor, record, and review employee communications and activities on the job, including their telephone calls, e-mails, Internet connections, and computer files. Companies that engage in these practices do so for several reasons, including legal compliance (in regulated industries, such as telemarketing, to show compliance, and in other industries to satisfy “due diligence” requirements), legal liability (because employees unwittingly exposed to offensive material on a colleague’s computer may sue the employer for allowing a hostile workplace environment), performance review, productivity measures, and security concerns (protection of trade secrets and other confidential information).

. . . . For these reasons, the use of computers in the employment context carries with it social norms that effectively diminish the employee’s reasonable expectation of privacy with regard to his use of his employer’s computers.

Id. at 161-62, 96 Cal. App. 4th at 451-52. The court, like the others cited above, held that workplace policies, including the employer’s entitlement to monitor usage on an “as needed” basis, defeated a claim to a reasonable expectation of privacy in the computer. Id. at 163-64, 96 Cal. App. 4th at 452-54.

Surely, some lament the general lack of privacy in the modern workplace. [Finkin] But in applying the Fourth Amendment we take societal expectations as they are, not as they could or (some think) should be. [Silva at 1055].

Social norms suggest that employees are not entitled to privacy in the use of workplace computers, which belong to their employers and pose significant dangers in terms of diminished productivity and even employer liability. Thus, in the ordinary case, a workplace computer simply “do[es] not provide the setting for those intimate activities that the [Fourth] Amendment is intended to shelter from government interference or surveillance.” [Oliver at 179] [Muick at 743]. Employer monitoring is largely an assumed practice, and thus we think a disseminated computer-use policy is entirely sufficient to defeat any expectation that an employee might nonetheless harbor.

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