Calculation of metrics

Cyberweather

The calculation of cyber weather (cybertoxicity in cyT) is performed as follows:

$$cyT = 1 * in + 10 * out \text{, with }\begin{cases} \text{ } in \text{ the number of toxic flows IN} \\ \text{ } out\text{ the number of toxic flows OUT}\end{cases}$$

The weighting of an OUT toxic flow is much more important because it represents a network device that initiates a communication to a toxic IP address.

There are 5 different levels of cyberweather:

Cybertoxicity (cyT)	Icon
Equal to zero
Between 1 and 5 inclusive
Between 6 and 10 inclusive
Between 11 and 99 inclusive
100 and more

Cybercarbon

The cyber carbon represents the equivalent in CO2 emissions (CO2e) of the volume of the network flows.

According to the ADEME (French Environment and Energy Management Agency) and a report posed in January 2022, the study shows that the environmental impact of data transmission on :

• a fixed network (about 18 gCO2e / Go)

• a mobile network (estimated at 50 gCO2e / Go)

Affichage environnemental dans le secteur du numérique – AdemeAgence de la transition écologique

Source of the environmental impact of fixed and mobile networks

In the case of Serenicity, the majority of the devices are installed on fixed networks. Therefore, the calculation is as follows:

$$cyC \text{ (in gCO2e) }= \frac{18 * x}{10^9} \text{, with } x \text{ the sum of the flows in bytes}$$

The notation gCO2e / kgCO2e means gram / kilogram CO2 equivalent.