Bittrex is a honeypot, just like Poloniex is a honeypot. They get users trading there then once volume spikes they blackmail you to verify your account in order to withdraw. Anyone with a decent amount of Bitcoin on there is a "security" reason. In theory, they could just freeze everyone's accounts citing security reasons and force traders into a drawn out legal battle for years citing "compliance" issues.
If you were a state level actor and you wanted to gain a database of all bitcoin/altcoin traders - what better way than to use an exchange in this manner?
If you were a criminal organization - what better way to get a database of high net worth traders (whales) than hacking an exchange?
Best get your funds off there to avoid theft. Legacy accounts are also being locked until verification so don't think you're grandfathered in.
In detail, I see multiple problems here:
#1 Insurance (of lack thereof)
If Bittrex is hacked, they don't provide any insurance for crypto funds. If you are waiting for support to "verify" your account because you want to withdraw funds and they are hacked. Who is liable? Most developed nations provide government backed insurance to banks in the event they are robbed. Bittrex is not a bank and they don't directly deal in fiat unless you request a wire transfer. Despite this, they are imposing "bank level security" on all users. Banks require personal information so that your funds become insured by respective national insurance programs. I don't see any benefit here for the end user.
#2 No Legal precedent for trading data
Is there any law compelling them to require verification for cryptocurrency withdrawal limits when not dealing with fiat? If there is, then shouldn't there be a law to download a cryptocurrency wallet? Where does this end? Cryptocurrency is just data. Should I need to verify my ID when downloading a file or an image? Equally ridiculous - should I be required to have verify the same information when trading MMO items on some MMO exchange? If you think thats ridiculous, some items in these MMOs are worth more than a Bitcoin:
http://www.therichest.com/rich-list/most-popular/10-of-the-most-expensive-virtual-items-in-video-games/The Hong Kong finance minister is correct with his assessment, “Bitcoin is not a currency. Just like your armour in World of Warcraft, since we don’t regulate those, we won’t be regulating Bitcoin.” -John Tsang HK Finance Minister
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https://www.economist.com/news/china/21603499-rule-law-continues-appeal-still-differentIn addition, AML/KYC applies to fiat currency. Most developed nations have agreed that cryptocurrency is not money. If an exchange is not dealing in fiat (what government classifies as money) then where is the precedent?
https://www.theguardian.com/technology/2016/jul/26/bitcoin-not-real-money-miami-judge #3 Verification data exposes traders to criminal organizations
The recent Equifax hack has shown that even fortune 500 companies with billions invested in securing personal data are susceptible to hacks which in turn expose the most private information for identity theft. What happens if Bittrex or Poloniex is hacked? It wouldn't be out of the realm of possibility for personal information on traders (name, address, photo ID, crypto networth) to end up on the black market and sold to the highest bidder. What's to stop criminal organizations from targeting high net worth traders for kidnapping and torture until they reveal their bitcoin wallet passwords?
If you think about this possibility then the personal information on traders becomes more valuable than the actual Bitcoin on the exchanges. Not only can they come rob your house and your valuables like cold storage, but they can also ransom your family members or who knows what.
If the Jamaicans are doing it (no offense to any) you can guarantee that more sophisticated organized cartels and mafias are doing it. It just hasn't hit the news yet.
http://infocoin.net/en/2017/10/16/jamaican-police-say-traffickers-are-turning-to-bitcoin/