Sites you’ve visited, active logins, individual website settings – Firefox provides you with the option of saving any user data in the browser-specific history, but this practical feature always comes with the risk that such information could end up in the wrong hands. We’ll show you how to counter this risk, and clear your Firefox history.
Personal data that you carelessly make available on the Internet can later cause considerable harm. If you are the victim of a doxxing attack, your most private information is picked up on the web and disseminated with lightning speed. This can result in insults, threats, and defamations – offline as well as online. Why do perpetrators resort to this sinister method?
Passwords have long ceased to offer sufficient protection when surfing the internet: They are easy to crack, easily tapped, and difficult to remember. Together with the FIDO Alliance, the World Wide Web Consortium has developed a new standard. WebAuthn is intended to make logging into social media or online shopping portals easier and safer. How does it work?
Different countries sometimes have different regional date and time formats. This can often result in preventable errors, especially when sharing data. For instance, the format 7/9/2019 means “July 9, 2019” in some countries, and “September 7, 2019” in others. To solve this problem, the ISO 8601 standard was agreed internationally. But what exactly does this standard specify?
Since the introduction of internationalised domain names in 2003, Punycode has been ubiquitous on the internet. Internet addresses like look peculiar, but fulfil an important function: They encode non-ASCII characters into ASCII-compatible character strings and therefore ensure a smooth flow in the network. How does this work, and why is Punycode criticised so often? We’ll tell you.
The creation and continued development of web applications require numerous data sets. How exactly these data sets are stored in databases is crucial for the user. The CouchDB database management system stores data in a way that is schema-free and document-oriented. Non-structured or half-structured data can be virtually filtered and structured without any issues.
Realigning a table can be a marathon task. Copying or re-typing each cell individually – that takes time. Thankfully, areas can be transposed in Excel. This way, you can convert rows into columns and columns into rows, almost like turning the table on its side. Excel offers a function to do this with paste and even its own array formula.
If you regularly work with tables, you often encounter rows without content when reworking and restructuring them. Removing each of these rows by hand is often very tedious. However, Excel can find these blanks automatically. There are even several ways to delete blank rows in Excel. We will introduce two of them in the following.
Microsoft Excel has many functions that help you produce calculations, statistics, and tables. Some of these functions do not even make it into the official list in the software. DATEDIF is one of those hidden functions that can help you calculate periods of time. The result can be shown in days, months or years. We’ll explain how it works.
In Excel, we almost always work with cell references. Rather than entering values into formulas individually, we pull them from the cells of tables. The INDIRECT Excel function enables you to even obtain references from other cells. This can be helpful when working with multiple worksheets or when creating complex formulas, for example. We explain how to use INDIRECT in Excel.