Sept 18 (Reuters) - Pine-Sol maker Clorox said on Monday its first-quarter results could see a "material impact" from a cybersecurity attack last month that damaged portions of its IT infrastructure and caused widescale disruption to its operations.

The household staples maker said on Aug. 14 that unauthorized activity on its computer network forced it to take its systems offline, causing delays in order processing.

The bleach maker said it had resumed production at the majority of its manufacturing sites, but could not estimate how long it would take to resume fully normalized operations.

The company did not give a breakdown of the financial impact and said it was still evaluating the situation.

Clorox shares were down more than 2% in premarket trading. (Reporting by Granth Vanaik in Bengaluru; Editing by Anil D'Silva)