I'm Nicole Lapin, the only financial expert you don't need a dictionary to understand.

It's time for some money rehab. Here's your weekly roundup of the biggest headlines on Wall Street and how they affect your finances.

Our first story probably didn't impact you directly but may have had Wall Street Bros. Sweatting.

The US-based arm of one of the world's largest banks, the Industrial and Commerce Bank of

China or ICBC, was hacked last week.

And this was no small time hack.

This was a ransomware attack so devastating

that employees couldn't even access their corporate emails.

Now, let's step back for a second

and talk about what the heck this bank does because it's really

important to understand why this was such a big deal for global financial markets.

I'm sure you already know this by now but when you log on to your brokerage account and

buy a stock it feels like it happens

instantaneously but multiple steps are happening at the speed of the best

financial computers money can buy. The system identifies the price of a

stock on the market matches you with a seller and creates a deal.

Then it sends your cash from your account to the sellers and sends their stock to your brokerage account.

Your broker doesn't handle all the parts of this process. There are market

makers, exchanges, and other brokerages involved. Once all of those steps are

completed, the trade is considered settled. That's just the process for you to

buy one share of let's say

SPY. Giant funds are trying to buy huge bundles of stocks all at the same time and

...