The Wall Street Journal’s Pui-Wing Tam shares many interesting details today in a front-page story about Hewlett-Packard Co.’s investigation of her as part of its probe into leaks by board members. One noteworthy nugget: When H-P’s now-former chairman, Patricia Dunn, sent emailed apologies to journalists who came under scrutiny in the probe, the email to Tam had her name in a different font than the rest of the message. (Reminds me of some of the PR pitches I get.) Yesterday, Tam got a face-to-face apology from Cathy Lyons, H-P’s chief marketing officer. But Tam writes that there’s still a lot she doesn’t know about the look into her private life, at least in part because H-P is not getting cooperation from security firms it hired to conduct investigations.