(CNN Business) Facebook announced Wednesday it is imposing stricter disclosure and transparency standards on political ads in the United States after, the social networking platform said, it caught some advertisers trying to game the system by misleading users about who was funding the ads.

But the tighter rules still leave some holes that could be easily exploited.

Facebook FB Under the new system there are two ways for groups or individuals to verify their identity: A stricter method under which advertisershas verified will receive a special "Confirmed Organization" label on their ads, and a second method indicating less confidence in the advertiser's identity.

To obtain a "Confirmed Organization" label, advertisers will need to provide a US address, phone number, business email, business website and one of the following: a tax-registered organization identification number, a government website domain that matches an email ending in .gov or .mil, or a Federal Election Commission identification number.

Advertisers who don't have or don't want to submit such credentials will be able to alternatively submit some basic information about their organization like addresses, emails and website, or rely solely on the page administrator's legal name, though the organization will be ineligible to use a registered organization name in their disclaimers or to receive a "Confirmed Organization" label.

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