To overcome them? Very low.
This airdrop is just a fiasco.
Github, Hackernews and Keybase have been hacked, Keybase had to stop its airdrop.
And now phishing attacks are targeting keybase users...
Be careful.
https://bitcointalk.org/index.php?topic=5186085...
What happened then?
Scammers and hackers attacked Keybase, Github and HackersNews to steal users data and profiles,
so they can get more than one airdrop.
Who got hacked?
Keybase got hacked., and all email and data stolen by hackers.
But keybase/stellar NEVER admitted that, they only said it was attacks on Github and HackerNews.
In reality hackers now have emails and data of every Keybase user.
Then Stellar halted Airdrop, and even did roll-back and removed verified users.
When I tried to talk with them on github and leave feedback they erased my comment and banned me.
...
Today, on same email I used to registered with keybase, I received this email
...
UPDATE #2 September 16: HackerNews and GitHub were both under attack by bad actors who hoped to game this by stealing other users' accounts. In cooperation with both of those sites, we've halted Space Drop registration for anyone who wasn't a Keybase user before Sept. 9. SDF and Keybase will discuss, while whining and moaning, how this giveaway can continue. (COME ON PEOPLE OF THE INTERNET, STOP SUCKING SO MUCH!)
https://keybase.io/a/i/r/d/r/o/p/spacedrop2019