Images and Licensing

Images are an important part of communication; they help break up the monotony of text and can also convey information, help set the mood, and provide flow for a discussion. It is important to get license permissions sorted out before using any images, especially in a professional venue, because failing to attribute the original artist and comply with their intentions for using their work will legitimize your own work, and possibly cause legal action to be taken against you.

Creative Commons licensing allows you to specify that a piece of work is able to be freely distributed, even without citing the source (although it may be prudent to do so anyway to inform your readers).

Citing this image in apa format:
Linforth, P. (n.d.). [Login Screen]. Retrieved May 3, 2017, from https://pixabay.com/en/internet-security-password-login-1952019/

Here's an image that I think would be good for showing the differences in hash speeds of various functions. This could help me lead into a discussion about the double edged sword of hashing speeds, where fast hashes use less resources to computer and are faster/more responsive, a necessity in modern network communication, while slower hashes are more secure. These days password hash algorithms such as bcrypt are tailored for security, being extremely expensive to compute given their small inputs (instead of hundreds of hashes per millisecond something like a few hashes per second).

Link

Unfortunately many images on the web (such as this one) do not disclose their licensing status, and frequently there is also no author or origin information. In this case I could always gather the information and make my own graph instead of using this one which would be more professional (and I would trust the numbers more).