They do offer a bootcamp, which makes me a bit suspicious.)

"Raising cash reserves" by selling property at a huge discount is suspicious, and a phrase commonly used by someone scamming you.So, when did they buy it, how much did they pay, what's it worth, how much are they asking?

That sounds a bit suspicious.  

She was nice but also seemed rather suspicious of the whole deal because she seemed pretty sure that everyone was trying to kick her out of the house.

When you move in, don't forget to join Nextdoor to get latest updates (classifieds, community outreach, including suspicious activities in the area).  

Its clearly spelled out on the IRS website.https://www.irs.gov/uac/newsroom/scam-phone-calls-continue-irs-identifies-five-easy-ways-to-spot-suspicious-calls

Say there are suspicious people hanging out in the property next door, and you know the home is owned by the bank, and it's for sale.

I'm suspicious there is no contact by email phone or otherwise either.

I've also noticed the same bidder is always bidding on all the houses which is a little suspicious.

Being suspicious of the low bid, I contacted the Texas Natural Resource Commsion, spoke with the director and bought him lunch.