700 million LinkedIn users data compromised

PLEASE NOTE: NO PASSWORDS WERE COMPROMISED, BUT OTHER DATA.  Changing passwords on LI won't help at this point.

https://restoreprivacy.com/linkedin-data-leak-700-million-users/

On June 22nd, a user of a popular hacker forum advertised data from 700 Million LinkedIn users for sale. The user of the forum posted a sample of the data that includes 1 million LinkedIn users. We examined the sample and found it to contain the following information:

• Email Addresses
• Full names
• Phone numbers
• Physical addresses
• Geolocation records
• LinkedIn username and profile URL
• Personal and professional experience/background
• Genders
• Other social media accounts and usernames

Linkedin's response

While we’re still investigating this issue, our initial analysis
indicates that the dataset includes information scraped from LinkedIn as
well as information obtained from other sources. This was not a
LinkedIn data breach and our investigation has determined that no
private LinkedIn member data was exposed. Scraping data from LinkedIn is
a violation of our Terms of Service and we are constantly working to
ensure our members’ privacy is protected.

It predates this “incident” by a couple of weeks, but all of a sudden, I am getting spam in my gmail Junk folder. Dozens a day. Diets and prostate “cures” and lots of prizes and people wanting me to confirm orders I never placed. Anyone else experiencing this? It’s like the firewalls ceased to exist. (I check Junk pretty often, as Google is pretty good at sorting, but some of my real stuff does go to Junk at times.)

Apparently $5,000 is the asking price for all 700 million records to all buyers on the dark web, so I think there's a lot more spam heading to LI users' in-boxes.

My spam has been increasing the last month or so too. Then again, I don't remember a time when it was ever decreasing, so there's that.

I am admittedly ignorant on the subject, so this could be a really dumb question, but does the blockchain technology associated with Bitcoin and other e-currencies have a more robust effect on security?

Or is it something else entirely? 

I guess my question relates to whether blockchain can be used to enhance network security.