Some of you might remember that a certain flaw within O2's system was uncovered a few days ago, but now the mobile operator has confirmed that the error is fixed.

As a quick reminder, the mistake meant that websites had access to the numbers of O2 customer's that were visible when users accessed the web.

This raised a whole array of privacy concerns - the websites could have used the numbers for marketing purposes or advertising, among other ways to use the information.

However, O2 fired back, saying that the only firms that had access to the data were its "trusted partners" for billing or age verification purposes, but nothing more.

The firm admitted that the glitch took place shortly after some scheduled maintenance during which the mobile provider had applied some technical changes.

O2 issued a statement on its website:

"We investigated, identified and fixed it this afternoon. We would like to apologise for the concern we have caused."

"When you browse from an O2 mobile, we add the user's mobile number to this technical information, but only with certain trusted partners. This is standard industry practice."

Industry insiders were quick to question as to whom exactly were these "trusted partners", that were able to access customer data, as O2 has not identified them as yet.

The data spills only happened via 3G, if you are an O2 customer and were browsing through your Wi-Fi connection, then you have nothing to worry about, unless it was a public wireless broadband hotspot.