A year-by-year view of the AllBSides talks archive: how many talks were recorded each year, which topics dominated, and how the difficulty + team mix has shifted across 8,722 recorded talks total.
Heads up: tagging is an ongoing effort and older talks are still being indexed. Earlier years carry thinner coverage, so trend lines reflect both what BSides actually programmed and how much of it has been classified so far.
Each bar is the count of non-hidden talks linked to that year (via a talk's explicit year or the linked event's year).
6,621 of 8,722 talks tagged with a year · 24% not yet tagged
Counted across 8,722 archived talks; years with no recorded talks are not shown.
Top 5 most-tagged topics per year, ranked by talk count. Each year's row also shows the total number of talks recorded that year for context.
Coverage: 3,474 of 8,722 archived talks have a topic tag applied.
Stacked bar per year. Segment widths show the share of that year's difficulty-tagged talks (not the share of all talks), so the mix is honest even when overall coverage is thin.
Coverage: 1,286 of 8,722 archived talks carry a difficulty tag. Bands with no segment are years that haven't been classified for difficulty yet.
Same stacking as the difficulty bars, scoped to the team dimension (Red / Blue / Purple). A balanced bar means the year's talks split roughly evenly across the offence / defence / overlap framing.
Coverage: 1,648 of 8,722 archived talks carry a team tag. Many community / career / policy talks are intentionally untagged for team because they don't fit the offence/defence framing.