Using 7-Zip to create AES-256 encrypted zip files from the command line

Sunday, March 11, 2018


The default encryption method used by 7-Zip for Zip files, and the only method supported by InfoZip, is ZipCrypto, which is generally pretty terrible. To create AES-256 encrypted archives using 7-Zip, use:

$ 7z a -tzip -mem=AES256 -p super-secret.zip super-secret.txt

To verify that it worked, use:

$ 7za l -slt super-secret.zip

Notice that all the filenames within the archive are visible; I don't think 7-Zip supports Zip header encryption. You can do it the ghetto way by simply putting a Zip inside an encrypted Zip to hide the filenames in the inner one.

Tags: | Posted at 20:50 | Comments (2)


Comments

Shannonrom on Monday, November 4, 2019 at 14:30

In the first half of the week it is possible to exit the side range to the nearest support levels.

Last Wednesday the <b>BCH</b> price set a weekly high around 307.00 USD, but by Friday the sellers had returned the pair below the support of 275.00 USD.


Last weekend, the pair moved in a positive direction again. On Sunday morning, the pair recovered to its weekly high.

Yesterday afternoon you can see a small bearish spike on the volumes, which rolled the price back to the level of 38.2% Fibo (289.51 USD). If the buyers will be able to consolidate above it, the next high can be expected in the area of 315.00 USD.

If the bears resume pressure, the rollback will continue below the support of 275.00 USD.


<b>The Litecoin</b> price was lower than the hourly EMA55 for most of last week. After a weekly high around 61.00 USD, bears pressed the price against the POC line (58.20 USD) and did not issue above 78.6% Fibonacci (59.31 USD).

Buyers are now trying to test the upper limit of the side range. There is a small possibility of a breakthrough in the area of 64.00 USD, but on the daily frame the indicator lines of the Stoch RSI in the overbought zone, so it is more likely that in the first half of the week the Litecoin price is expected to decline to the support of 54.00 USD.


<b>EOS</b>
Until the end of the week, the bears failed to push the lower boundary of the sidewall at 3.20 USD and the price continues to move sideways. The POC line (3.345 USD) limits the buyers from above. At the weekend, the EOS tried to recover above the “fair price” line, but it failed to consolidate on small volumes in this area.

Now the consolidation continues, and if the buyers manage to break above the average price level, it is possible to re-test the purple trend line. In the medium term, we should expect a decrease in support for 3.05 USD.


At the weekend, the <b>XLM</b> price rolled back to support the yellow uptrend line and stayed above the average price level. Capitalization of Stellar Lumen allows the asset to take the tenth place in the CoinMarketCap rating and successfully compete with TRON, which was pushed to the 11th line of the list last week.

Today the price will try to stay above the two-hour EMA55, but soon the bearish pressure may increase and the pair will roll back below the POC line (0.063 USD).
Source https://cryptorolling.com/analysis-by-bitcoin-cash-abc-litecoin-eos-and-stellar-lumen-as-of-04-11-2019/

Shannonrom on Monday, November 4, 2019 at 18:53

An error in the code of the Internal BitMEX Bitcoin Exchange system for mass emails has resulted in the disclosure of user email addresses. Other personal data was not disclosed.
On Friday, November 1, the majority of users of the site received a letter notifying them of changes in the calculation of indexes for pricing derivative products. However, in the field “To:” the exchange disclosed the addresses of other recipients.

The distribution was carried out in packs of 1000 people each. Accordingly, each letter disclosed 1000 addresses.

Some users received correct notifications without compromising the data or did not receive the letter at all.

After the incident, the security service identified several accounts carrying out suspicious activity. Their owners had to change their passwords and in some cases pass an additional check in the support service.

The exchange almost immediately closed the withdrawal for accounts:

without two-factor authentication;
Withdrawals after address compromising;
Withdrawals to previously unknown Bitcoin addresses;
incoming from previously unknown IP addresses.
BitMEX urged all users to install 2FA on their mail and stock account.

Representatives of the organization also explained that shortly after the incident, an unknown person took control of the Twitter-page of the exchange for six minutes.
Source https://cryptorolling.com/bitmex-explained-the-causes-and-consequences-of-the-data-leakage-incident/

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