A law enforcement official said cyber thieves gained access to over 1,000 accounts on the online ticket marketplace Stubhub and bought fraudulent tickets. The official Tuesday said that arrests were expected but could not discuss the details of these arrests before their announcement.

Stubhub, a San Fransisco-based company, said the hackers gleaned the login information from data taken off of other websites or malware on customers' computers, not by infiltrating the website's security. Owned by eBay, Stubhub detected the ongoing unauthorized transactions last year and simply voided the sales, refunded their customers and alerted authorities, according to company spokesperson Glenn Lehrman.

The case affects customers from around the world with accounts on the website looking for sports, concerts and theater ticket reseller. Manhattan District Attorney Cyrus R. Vance Jr. is expected to hold a news conference Wednesday along with London and Royal Canadian Mounted Police.

Within the last year, several major retailers have had security breach issues regarding customers' personal data. Neiman Marcus, Ebay, LinkedIn and Target have all been recently hacked for users information. Most notably, Target announced in December that it had been targeted for data on 40 million credit and debit cards, which began to be stolen over Thanksgiving weekend.

Lehrman warns users that hackers who can locate one password and email for a user will often try the same login on another site. Since many people repeat passwords across multiple accounts, hackers can often use less-secure data to access personal or financial information on another site.

According to their website, Stubhub pledges a way to "provide fans a safe, convenient place to get tickets to the games, concerts, and theater shows they want to see." The company is the official secondary market for Major League Baseball tickets and has even announced plans to become an event producer itself.