Anna Chapman has been called the femme fatale of a spy case with Cold War-style intrigue — a striking redhead and self-styled entrepreneur who dabbled in real estate and mused on her Facebook page, "if you can dream, you can become it."

Chapman's American dream, U.S. authorities say, was a ruse.

The 28-year-old Chapman, they say, was a savvy Russian secret agent who worked with a network of other operatives before an FBI undercover agent lured her into an elaborate trap at a coffee shop in lower Manhattan.

Though the U.S. has branded the operatives as living covertly, at least in Chapman's case, she had taken care to brand herself publicly as a striver of the digital age, passionately embracing online social networking by posting information and images of herself for the world to see.

Prosecutors have charged Chapman and 10 other suspects with following orders by Russian intelligence to become "Americanized" enough to infiltrate "policymaking circles" and feed information back to Moscow.

Assistant U.S. Attorney Michael Farbiarz has called evidence against Chapman "devastating." She is "someone who has extraordinary training, who is a sophisticated agent of Russia," he said.

Chapman and nine others accused of being ring members were arrested across the Northeast and charged with failing to register as foreign agents, a crime that is less serious than espionage and carries up to five years in prison. Some also face money laundering charges. An 11th suspect was arrested in Cyprus, accused of passing money to the other 10 over several years.

Prosecutors said several of the defendants were Russians living in the U.S. under assumed names and posing as Canadian or American citizens. It was unclear how and where they were recruited, but court papers said the operation went as far back as the 1990s. Exactly what sort of information the agents are alleged to have provided to their Russian handlers — and how valuable it may have been — was not disclosed.

The FBI finally moved in to break up the ring because one of the suspects — apparently Chapman, who was bound for Moscow, according to court papers — was going to leave the country, the Department of Justice said Tuesday.

The court papers allege that some of the ring's members were husband and wife and that they used invisible ink, coded radio transmissions and encrypted data and employed methods such as swapping bags in passing at a train station.

Farbiarz called the arrests "the tip of the iceberg" of a conspiracy by Russia's intelligence service, the SVR, to collect information inside the U.S. The arrests raised fears that Moscow has planted other couples.

Such deep-cover agents are known as "illegals" in the intelligence world because they take civilian jobs instead of operating inside Russian embassies and military missions.

Russian officials initially denounced the arrests as "Cold War-era spy stories" and accused elements of the U.S. government of trying to undermine the improving relationship between Moscow and Washington. But the White House and Russian Prime Minister Vladimir Putin expressed confidence that the arrests would not damage ties between the two nations.

At a court hearing Monday in federal court in Manhattan, where Chapman was jailed without bail, her attorney called the case against her weak. He said she had visited the United States on and off since 2005 before settling in Manhattan to start a business.

Chapman took an apartment a block from Wall Street and began using online social networks, including LinkedIn and Facebook, to develop business contacts and to market her skills. On her LinkedIn page, Chapman is listed as the chief executive officer of PropertyFinder Ltd., which maintains a website featuring real estate listings in Moscow, Spain, Bulgaria and other countries.

"Love launching innovative high-tech startups and building passionate teams to bring value into market," Chapman's LinkedIn summary says.

She lists previous jobs at an investment company and a hedge fund in London. The summary also says she earned a master's degree in economics at a Russian university in 2005.

In more than 90 photos posted to Facebook, Chapman is pictured in various countries, including Turkey, where she is in one of the rooms of the luxurious Hotel Les Ottoman, in Istanbul. There are also what look like family photographs from Russia and photographs of her dressed in a student uniform.

Her Internet footprints also include a photo of her posing with a glass of wine between two men at the Global Technology Symposium at Stanford University in March — it cost more than $1,000 to attend — and video clips, speaking in Russian about the economic opportunities in her adopted home.