A credit repair company initiates credit challenges to bureaus when they notice errors in your credit reports. Credit report disputes involve challenging credit bureaus, drafting goodwill letters to remove late payments and contacting data furnishers to verify old debts. Credit repair specialists review the results and, if necessary, escalate the dispute process.
If you find information that is incorrect, you can file a dispute. Remember too, that items on your credit report that you don't recognize could also be potential signs of fraudulent activity — someone working to secure credit in your name for their own use. Make sure you're clear on items that could potentially be fraudulent, versus those that may simply be inaccurate.