More or less they were claiming that it's unhackable, and that's my only issue with them.
https://www.ledger.fr/2015/03/27/how-to-protect-hardware-wallets-against-tampering/


This claim was proven false now.

Nevertheless in my opinion I still think a hardware wallet is more secure than any other wallets when used safely.
Just that hardware wallets do have security issues does not make any other type of wallet which have MORE security issues suddenly better.

My ranking of wallets in terms of security would be the following

• Hardware wallets
  If you don't take them outside of your home and attacker don't get physical access they are pretty safe -> with physical access as proven now it might not be safe
• Paper wallets
  If they are kept hidden in a secret place -> but with physical access by an attacker -> no security at all.
  If people carry them around I consider them worse than any mobile wallets (they do at least have a pin to secure the wallet).
• Airgapped PCs
  Pretty safe as long as an attacker don't get pyhsical access. I consider them worse than a hardware wallet because a PC/MAC/whatever even if not connected to the big world has a much bigger attack vector than a hardware wallet if getting pyhsical access.
• Any local hot wallets on PC/MAC
  With spyware or other malicious software these wallets can be easily compromised. No physical access necessary
• Any mobile wallets
  The security of such wallets is usually quite bad. Usually very short pin-codes are used to secure the wallet. As it's easy to lose them an attacker can get physical access to it.
• Online wallets where you control the private keys
• Online wallets where you don't control the private keys

Did I miss any type of wallet?

Beside of my listed ranking anyone can (and should) improve the security by combining several methods above and use multi signature addresses. In this case it is not possible to steal funds if just one of the methods is compromised.

Would be interested if someone has a different ranking than me.

In bitcoin's pyramid scheme, criminals have exploited the greed of people's ignorance and dreams of the currency. The essence of pyramid selling is a ponzi scheme, where a bitcoin is not fundamentally different from a tulip or a box of cosmetics.


In the event of an hacker blackmail, criminals use the anonymity of the currency, trying to escape legal sanction, COINS and cash here, there is no essential difference between just more convenient, lower cost.


In money laundering, drug trafficking, and terrorist crimes, criminals use the anonymity and high mobility of bitcoin to hide the flow of funds, which is the same as the effect of using cash.

Just because there are vulnerabilities found does not mean that they are inherently insecure. Do you say the same things about software wallets too (many of which have had vulnerabilities found and patched, just like with these hardware wallets)? Do you say the same thing about the general purpose computer you use which you don't even know how it works? Every piece of software and many pieces of hardware will have some vulnerability found in them; given enough time, it's almost inevitable.

That's slightly misleading. This 15 year old has dedicated a lot of time into working on hardware wallets, particularly in their firmware. He's been involved in numerous other vulnerability discoveries in the past with Trezors (and possibly Ledgers). The kid is very smart, probably smarter than you when it comes to hardware wallets. He's not just some random 15 year old who found this; he actually dedicated a lot of time into learning about how hardware wallets work and has been working with them for years.

...

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Of course, the fact that we have to use closed source computers to run Bitcoin Core, makes it impossible to be 100% safe esp. against state actors.

...

You don't have to use a closed source OS. You have decided for yourself to use closed source software.
Everyone is free to use the software he wants. There are a lot of open source linux distributions available on the internet.

I will take the bait since my name is already on your ignore list ...I guess it entered when I made a comment on one of your threads regarding block size increase, maybe you didn't like it I went through the list, almost 80% of Sig campaigners are on the list. Are all these spammers? I joined a Sig campaign after I became a hero member, not justifying my poor post quality, just saying, no offense taken being on your ignore list

Went through all the posts on this thread, majority have just grasped the title without taking a glance at the content ...Sig spammers indeed.

So what ways of keeping bitcoins safe do you recommend then? Many people consider hardware wallets as something that is not possible to breach because they were told so. In both Ledger and TREZOR there were discovered vulnerabilities which allowed potential attacker to extract the seed. I haven't heard of any issues with KeepKey. I was thinking of using an air-gapped computer for storing large amount of BTC and a hardware wallet in case I needed to travel and have some bitcoin with me just in case. Have you ever used any hardware wallet?

This does not come without risk for
users as each participant has to locally replicate the complete blockchain,
particularly including potentially harmful content.

Abstract.
Blockchains primarily enable credible accounting of digital
events, e.g., money transfers in cryptocurrencies. However, beyond this
original purpose, blockchains also irrevocably record
arbitrary data, ranging from short messages to pictures. This does not come without risk for
users as each participant has to locally replicate the complete blockchain,
particularly including potentially harmful content. We provide the first
systematic  analysis  of  the  benefits  and  threats  of  arbitrary  blockchain
content. Our analysis shows that certain content, e.g., illegal pornogra-
phy,  can  render  the  mere  possession  of  a  blockchain  illegal.  Based  on
these insights, we conduct a thorough quantitative and qualitative anal-
ysis of unintended content on Bitcoin’s blockchain. Although most data
originates from benign extensions to Bitcoin’s protocol, our analysis re-
veals more than 1600 files on the blockchain, over 99 % of which are texts
or images. Among these files there is clearly objectionable content such
as links to child pornography, which is distributed to all Bitcoin partic-
ipants. With our analysis, we thus highlight the importance for future
blockchain designs to address the possibility of unintended data insertion
and protect blockchain users accordingly.

6    Conclusion
The possibility to store non-financial data on cryptocurrency blockchains is both
beneficial and threating for its users. Although controlled channels to insert non-
financial data at small rates opens up a field of new applications such as digital
notary services, rights management, or non-equivocation systems, objectionable
or even illegal content has the potential to jeopardize a whole cryptocurrency.
Although  court  rulings  do  not  yet  exist,  legislative  texts  from  countries  such
as  Germany,  the  UK,  or  the  USA  suggest  that  illegal  content  such  as  child
pornography can make the blockchain illegal to possess for all users.
As we have shown in this paper, a plethora of fundamentally different meth-
ods to store non-financial–potentially objectionable–content on the blockchain
exists in Bitcoin. As of now, this can affect at least 112 countries in which pos-
sessing content such as child pornography is illegal. This especially endangers
the multi-billion dollar markets powering cryptocurrencies such as Bitcoin.
To assess this problem’s severity, we comprehensively analyzed thequantity
and quality of non-financial blockchain data in Bitcoin today. Our quantitative
analysis  shows  that  4 %  of  the  roughly  251  million  transactions  in  Bitcoin’s
blockchain carry arbitrary data. We could retrieve over 1600 files, with new con-
tent infrequently being added. Despite a majority of arguably harmless content,
we also identify different categories of objectionable content. The harmful poten-
tial of single instances of objectionable blockchain content is already showcased
by findings such as links to illegal pornography or serious privacy violations.

Kind of game changer I would say. It can suck your balls out and can excite you at anytime in the future. They were right when they said it is roller coaster ride and its so wavy that it could get off the rail track. Lolz. Looks like it is dead end for the bitcoin but as we know whenever we think that its end of the bitcoin then it starts with new life and whole new track of upward movement. However this time it has gotten real nasty and its really not funny how it dropped all the way down from 20K to 8K now. Thats really worrying thing soft hearted.

Wow,I think you have to carefull when click anylink on internet

...
This website doesn't actually have 904625697166532776746648320380374280100293470930272690489102837043110636675 pages stored to disk, as that would take up quite a bit of space. 
...

Somewhere within last year, Bitcoin could rise as high up to almost $19,000 and this massive rise stirred up the interest and enthusiasm of investors. Few weeks later, Bitcoin began to experience gradual drop in price and now struggling to regain the position of the almost $19,000.
The question is: What is causing the drop in BTC? is Bitcoin ever going to regain that position and even beyond again? and if yes, when?(prediction)