2019-03-18: Cookie Violations Cause Archived Twitter Pages to Simultaneously Replay in Multiple Languages

Figure 1: Mixed language blocks on a memento of a Twitter timeline. Highlighted with blue colored box for Portuguese, orange for English, and red for Urdu. Dotted border indicates the template present in the original HTML response while blocks with solid borders indicate lazily loaded content. Would you be surprised if I were to tell you that Twitter is a multi-lingual website, supporting 47 different international languages ? How about if I were to tell you that a usual Twitter timeline page can contain tweets in whatever languages the owner of the handle chooses to tweet, but can also show navigation bar and various sidebar blocks in many different languages simultaneously, now surprised? Well, while it makes no sense, it may actually happen in web archives when a memento of a timeline is accessed as shown in Figure 1. Spoiler alert! Cookies are to be blamed, once again . Last month, I was investigating a real life version of " Ron Burgundy will read anything on the