Troubled Britney Spears has been forced to step up security in a bid to protect her children from the media frenzy that surrounds her. The 25-year-old star fears her battle for custody with ex-husband Kevin Federline will increase the media's interest - and put her children Sean Preston, two, and one-year-old Jayden James at risk. Spears' attorney Sorrell Trope tells People.com, "Recent aggressive actions by individuals who have followed (Spears) and blocked her access, with and without the children, have resulted in her decision to take certain security measures which she hopes will only be necessary temporarily, for the protection of the children. "Ms. Spears hopes that she and Mr. Federline will be able to reach an agreement as to all matters concerning their children. She hopes that by not commenting on court proceedings the media attention in those proceedings will subside, which she requests for the safety and well being of the children."