The hackers who infiltrated the

Microsoft

(MSFT) - Get Report

corporate network last week apparently didn't damage any of the company's existing products.

In a

statement Saturday, Microsoft said the hackers "may have viewed the source code for a single future product under development. The product was not a major product such as Windows ME, Windows 2000 or Office, and our investigation has confirmed that it has not been modified or corrupted in any way."

The company also said there are no signs the hackers gained access to any of Microsoft's online codes. As of Saturday, Microsoft said it "has no reason to believe that any customers have been or will be affected in any way by the incident."

The potential damage to Microsoft could have been large had the hackers been able to modify the code at the foundation of the firm's key products, especially Windows ME, the newest version of its key operating system, or Office, its popular package of word-processing, spreadsheet, presentation and email programs.

According to published reports, the break-in was discovered Wednesday when the company detected passwords being remotely sent to an email account in St. Petersburg, Russia.

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Microsoft's statement says the company is beefing up the protection of its corporate network and is working with U.S. law enforcement agencies to investigate the break-in.

Among recent high-profile computer crimes also is the early February incidents in which

Web vandals disrupted service at several online brokers and e-commerce firms such as

E*Trade

(EGRP)

and

eBay

(EBAY) - Get Report

.