For those worrying about the current, rather massive market decline, there is some good news coming up; the US Senate has a hearing scheduled today (https://www.banking.senate.gov/public/index.cfm/2018/2/virtual-currencies-the-oversight-role-of-the-u-s-securities-and-exchange-commission-and-the-u-s-commodity-futures-trading-commission) in which they will hear two testimonies:
One from the Honorable Jay Clayton, Chairman of the U.S. Securities and Exchange Commission: https://www.banking.senate.gov/public/_cache/files/a5e72ac6-4f8a-473f-9c9c-e2894573d57d/BF62433A09A9B95A269A29E1FF13D2BA.clayton-testimony-2-6-18.pdf
And one from the Honorable J. Christopher Giancarlo, Chairman of the U.S. Commodity Futures Trading Commission: https://www.banking.senate.gov/public/_cache/files/d6c0f0b6-757d-4916-80fd-a43315228060/A2A6C1D8DDBB7AD33EBE63254D80E9E3.giancarlo-testimony-2-6-18b.pdf
A very long read but overall rather positive messages they’re sending; Clayton is very optimistic that developments in financial technology will help facilitate capital formation, providing promising investment opportunities for institutional and
Main Street investors alike.
Many tokens / coins are being offered as investment opportunities, which actually puts them into the securitties market, which already contains rules and regulations (hence the cease and desist orders against Bitconnect) and should be treated as such.
Cryptocurrencies that are currencies should be viewed as cash and treated as such (including KYC / AML rules and regulations) but should not be treated as securities.
Financial products that are linked to a cryptocurrency that is a currency and not a security, would themselves be treated as securities.
In regards to ICOs, they are mostly seen as securities (decided on a case by case basis) and if a security, those who would use distributed ledger technology to raise capital or engage in securities transactions must take appropriate steps to ensure compliance with the federal securities laws. The Report and subsequent statements also explain that the use of such technology does not mean that an offering is necessarily problematic under those laws. The registration process
itself, or exemptions from registration, are available for offerings employing these novel methods.
In conclusion he’s basically saying that they are in favour of both cryptocurrencies and ICOs but that ICOs need to be reviewed more frequently to counter fraud and that cryptocurrencies need to adhere to securities laws if indeed they are a security (I.e. presented as an investment opportunity). They both belief that cryptocurrencies help with technological growth and should as such be protected.
So good news and bad news (depending on your perspective) and obviously there’s a lot more, but you can read and draw your own conclusions 
Hopefully this will help level out some of the current market fears.
Cheers,
Iwan