I just got an email from Google Voice saying that my "Google Voice forwarding phone needs to be verified within 30 days". What the deuce? Is it legit or some phishing scam? I've read enough of your articles to know that I need to be paranoid about links in any email message. So what's the story, Dave, legit or bogus?

Dave, I just got a notification from Skype that I have a voicemail message, but I'm confused how that can be, and when I clicked on the link to check it, I got an error page instead. What's going on?

I'm confused. I received a bunch of different emails from Craigslist that are posting confirmation receipts for things I actually haven't put up for sale on Craigslist. I clicked on the link to see what was going on and all I got was a "loading" message, and it wasn't even on the craigslist.com domain. What's it all mean, Dave? Is this some sneaky Craigslist phishing attack from some cybercriminals, or a script virus or what?

I really like the text-message based 2-step verification I have step up for my Facebook account, where I need both my password and the secret code that Facebook sends to my cellphone as a text message to log in. Even if someone rips my password, they can't get in without my phone too. Cool. [see: Set up login approval for your Facebook account]. My question is: can I do the same for Paypal?

I just got an email from an organization called NACHA that claims I have a failed ACH automatic payment transaction. Well, I do pay some bills through electronic funds transfer, but I'm confused: why wouldn't this message have come from my bank rather than some central organization. Is it a scam?

I just got an email from my bank - Wells Fargo - that says "Wells Fargo Bank technical department is performing alert upgrade to improve the security of our online banking notifications as part of our enhanced security measures". Not suspicious, except the next line says "This is mandatory validation exercise for all Wells Fargo Bank customers. During the database upgrading exercise we discovered a credit advice of a substantial inflow in your favor." What? Is this legit? I clicked on the link and it sure looks like Wells Fargo, but I'm scared to proceed in case it's some criminal phishing hack or other.

I'm freaking out! I sent $200 via Paypal to a friend of mine to help her out in a bind and she said she never saw the money or even a notification show up. Upon closer examination, I realize that I used the wrong email address for her. Now I'm afraid that someone else is getting the money! How can I cancel the transaction ASAP?

I'm concerned, Dave! I got an email from account-upgrade@gmail.com saying that "to ensure you do not lose your E-mail account during this period, you must confirm to us that your account is still active by responding to this notice with your account information", but then it asks for both my account name and password. Surely that's not right, is it?

I often find myself using public computer systems at Internet Cafes or public libraries to check on my Facebook account while I'm on the road (especially overseas) and after hearing some horror stories about keystroke recorders and stolen accounts, I'm rethinking my strategy. What would be awesome is if there were some sort of temporary or one-time use password I could use to log in to my Facebook account. Do they have something like that available?

Holy cow, I just got an email receipt from Apple's iTunes Store for $250 worth of music downloads that I never bought. I'm freaking out: I can't afford this! What's my recourse? Has someone stolen my credit card info??

Is this a phishing scam? I just got some email that looks suspicious with a link to "paypal-labs.com" Is it a scam or phishing attempt? Why can't they just make it paypal.com?

I'm concerned about an email I just got from Amazon.com saying that an order I'd placed had been cancelled, but I haven't placed an order for months. Did someone break into my account that I got the message "Amazon.com - Your Cancellation (2706-81146-4342895)"

I just received an email from Facebook telling me about a new login system that they're implementing in a few days, and telling me I need to log in and update my profile. I'm skeptical. Is this legit, Dave, or bogus?

I just got email from my system administrator saying that my Webmail account is out of space. This is really confusing, though, because I don't access my email via the Web. Is this legit or some sort of scam or phishing attempt?

I got a really weird email from a friend on Facebook: it was just a Web site URL and when I went to it, I got a warning message that it was an "unsafe" and that it'd been blocked. What the heck? What's going on?

As a contributing author to a weblog about South Africa's upcoming World Cup 2010 (see The South Africa Project) I was rather surprised the other day when I went to log in to our Wordpress blog, just to see the following warning in my Web browser:

What does it mean? How can we get this sort of warning from our own site, without ever opening up anything or getting any indication that we'd be hacked or compromised?

I got the strangest email, unlike anything I've seen from Facebook, telling me that I have a message to pick up on the site, but not giving me any of the message. Then it included a weird URL at which I was supposed to log in (even though I am already logged in to Facebook) so I could pick up the message. I stopped and decided I'd check with Guru Dave. So, is it legit?

I lost an auction on eBay, darn it, and a few days later got an email from the seller offering me the chance to buy the item for my highest bid as a "Second Chance Offer". I am very leery of these communications because eBay is cool, but it's also a hotbed for fraud in my experience. How the heck can I figure out if the Second Chance Offer from this eBay seller is legitimate?

I've just recently signed up for orkut and am wondering if the "friend requests" from people I have never bumped into before are legit or not. I've sent you the invite: can you tell me how to know whether it's a phishing attempt before I actually click on a link?

I got a message from Paypal with the subject "Help PayPal to avoid any kind of fraud" but I'm a bit suspicious: is this a legitimate way that Paypal is trying to get my help to avoid online scams, or is it a scam itself?